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Finding the Fourth Proportional to 468,073.36, 645,939.28 and 253,212.90

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Solution

The fourth proportional to 468,073.36, 645,939.28 and 253,212.90 is: 349,432.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,073.36 : 645,939.28 = 253,212.90 : x
  2. Step 2: Convert to fraction form
    468,073.36/645,939.28 = 253,212.90/x
  3. Step 3: Cross multiply
    468,073.36x = 645,939.28 × 253,212.90
  4. Step 4: Simplify right side
    468,073.36x = 163,560,158,312.71
  5. Step 5: Solve for x
    x = 163,560,158,312.71/468,073.36
  6. Step 6: Final answer
    x = 349,432.74

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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.