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Finding the Fourth Proportional to 549,404.13, 758,141.61 and 307,631.28

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Solution

The fourth proportional to 549,404.13, 758,141.61 and 307,631.28 is: 424,510.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,404.13 : 758,141.61 = 307,631.28 : x
  2. Step 2: Convert to fraction form
    549,404.13/758,141.61 = 307,631.28/x
  3. Step 3: Cross multiply
    549,404.13x = 758,141.61 × 307,631.28
  4. Step 4: Simplify right side
    549,404.13x = 233,228,076,569.99
  5. Step 5: Solve for x
    x = 233,228,076,569.99/549,404.13
  6. Step 6: Final answer
    x = 424,510.96

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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.