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Finding the Fourth Proportional to 555,420, 832,957.20 and 200,387.52

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Solution

The fourth proportional to 555,420, 832,957.20 and 200,387.52 is: 300,518.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,420 : 832,957.20 = 200,387.52 : x
  2. Step 2: Convert to fraction form
    555,420/832,957.20 = 200,387.52/x
  3. Step 3: Cross multiply
    555,420x = 832,957.20 × 200,387.52
  4. Step 4: Simplify right side
    555,420x = 166,914,227,574.14
  5. Step 5: Solve for x
    x = 166,914,227,574.14/555,420
  6. Step 6: Final answer
    x = 300,518.94

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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.