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Finding the Fourth Proportional to 493,955.32, 740,145.66 and 316,316.20

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Solution

The fourth proportional to 493,955.32, 740,145.66 and 316,316.20 is: 473,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,955.32 : 740,145.66 = 316,316.20 : x
  2. Step 2: Convert to fraction form
    493,955.32/740,145.66 = 316,316.20/x
  3. Step 3: Cross multiply
    493,955.32x = 740,145.66 × 316,316.20
  4. Step 4: Simplify right side
    493,955.32x = 234,120,062,617.69
  5. Step 5: Solve for x
    x = 234,120,062,617.69/493,955.32
  6. Step 6: Final answer
    x = 473,970.12

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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.