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Finding the Fourth Proportional to 493,966.40, 740,162.08 and 316,327.20

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Solution

The fourth proportional to 493,966.40, 740,162.08 and 316,327.20 is: 473,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,966.40 : 740,162.08 = 316,327.20 : x
  2. Step 2: Convert to fraction form
    493,966.40/740,162.08 = 316,327.20/x
  3. Step 3: Cross multiply
    493,966.40x = 740,162.08 × 316,327.20
  4. Step 4: Simplify right side
    493,966.40x = 234,133,398,312.58
  5. Step 5: Solve for x
    x = 234,133,398,312.58/493,966.40
  6. Step 6: Final answer
    x = 473,986.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.