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Finding the Fourth Proportional to 551,400.16, 761,221.28 and 371,060.32

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Solution

The fourth proportional to 551,400.16, 761,221.28 and 371,060.32 is: 512,257.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,400.16 : 761,221.28 = 371,060.32 : x
  2. Step 2: Convert to fraction form
    551,400.16/761,221.28 = 371,060.32/x
  3. Step 3: Cross multiply
    551,400.16x = 761,221.28 × 371,060.32
  4. Step 4: Simplify right side
    551,400.16x = 282,459,011,747.61
  5. Step 5: Solve for x
    x = 282,459,011,747.61/551,400.16
  6. Step 6: Final answer
    x = 512,257.76

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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.