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Finding the Fourth Proportional to 536,641.66, 740,403.84 and 321,703.30

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Solution

The fourth proportional to 536,641.66, 740,403.84 and 321,703.30 is: 443,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,641.66 : 740,403.84 = 321,703.30 : x
  2. Step 2: Convert to fraction form
    536,641.66/740,403.84 = 321,703.30/x
  3. Step 3: Cross multiply
    536,641.66x = 740,403.84 × 321,703.30
  4. Step 4: Simplify right side
    536,641.66x = 238,190,358,660.67
  5. Step 5: Solve for x
    x = 238,190,358,660.67/536,641.66
  6. Step 6: Final answer
    x = 443,853.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.