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Finding the Fourth Proportional to 349,720.80, 523,414.80 and 307,730.40

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Solution

The fourth proportional to 349,720.80, 523,414.80 and 307,730.40 is: 460,569.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,720.80 : 523,414.80 = 307,730.40 : x
  2. Step 2: Convert to fraction form
    349,720.80/523,414.80 = 307,730.40/x
  3. Step 3: Cross multiply
    349,720.80x = 523,414.80 × 307,730.40
  4. Step 4: Simplify right side
    349,720.80x = 161,070,645,769.92
  5. Step 5: Solve for x
    x = 161,070,645,769.92/349,720.80
  6. Step 6: Final answer
    x = 460,569.25

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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.