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Finding the Fourth Proportional to 19,081,200.40, 28,654,978.20 and 10,123,248.40

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Solution

The fourth proportional to 19,081,200.40, 28,654,978.20 and 10,123,248.40 is: 15,202,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081,200.40 : 28,654,978.20 = 10,123,248.40 : x
  2. Step 2: Convert to fraction form
    19,081,200.40/28,654,978.20 = 10,123,248.40/x
  3. Step 3: Cross multiply
    19,081,200.40x = 28,654,978.20 × 10,123,248.40
  4. Step 4: Simplify right side
    19,081,200.40x = 290,081,462,215,184.88
  5. Step 5: Solve for x
    x = 290,081,462,215,184.88/19,081,200.40
  6. Step 6: Final answer
    x = 15,202,474.48

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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.