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Finding the Fourth Proportional to 552,113.70, 761,909.59 and 307,096.80

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Solution

The fourth proportional to 552,113.70, 761,909.59 and 307,096.80 is: 423,789.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,113.70 : 761,909.59 = 307,096.80 : x
  2. Step 2: Convert to fraction form
    552,113.70/761,909.59 = 307,096.80/x
  3. Step 3: Cross multiply
    552,113.70x = 761,909.59 × 307,096.80
  4. Step 4: Simplify right side
    552,113.70x = 233,979,996,978.31
  5. Step 5: Solve for x
    x = 233,979,996,978.31/552,113.70
  6. Step 6: Final answer
    x = 423,789.51

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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.