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Finding the Fourth Proportional to 539,331.61, 744,272.93 and 294,321.21

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Solution

The fourth proportional to 539,331.61, 744,272.93 and 294,321.21 is: 406,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,331.61 : 744,272.93 = 294,321.21 : x
  2. Step 2: Convert to fraction form
    539,331.61/744,272.93 = 294,321.21/x
  3. Step 3: Cross multiply
    539,331.61x = 744,272.93 × 294,321.21
  4. Step 4: Simplify right side
    539,331.61x = 219,055,307,856.24
  5. Step 5: Solve for x
    x = 219,055,307,856.24/539,331.61
  6. Step 6: Final answer
    x = 406,160.71

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.