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Finding the Fourth Proportional to 307,476.74, 424,318.57 and 171,507.20

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Solution

The fourth proportional to 307,476.74, 424,318.57 and 171,507.20 is: 236,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,476.74 : 424,318.57 = 171,507.20 : x
  2. Step 2: Convert to fraction form
    307,476.74/424,318.57 = 171,507.20/x
  3. Step 3: Cross multiply
    307,476.74x = 424,318.57 × 171,507.20
  4. Step 4: Simplify right side
    307,476.74x = 72,773,687,298.34
  5. Step 5: Solve for x
    x = 72,773,687,298.34/307,476.74
  6. Step 6: Final answer
    x = 236,680.30

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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.