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Finding the Fourth Proportional to 262,488,687.90, 393,695,707.05 and 89,973,462.30

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Solution

The fourth proportional to 262,488,687.90, 393,695,707.05 and 89,973,462.30 is: 134,947,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,488,687.90 : 393,695,707.05 = 89,973,462.30 : x
  2. Step 2: Convert to fraction form
    262,488,687.90/393,695,707.05 = 89,973,462.30/x
  3. Step 3: Cross multiply
    262,488,687.90x = 393,695,707.05 × 89,973,462.30
  4. Step 4: Simplify right side
    262,488,687.90x = 35,422,165,855,935,020
  5. Step 5: Solve for x
    x = 35,422,165,855,935,020/262,488,687.90
  6. Step 6: Final answer
    x = 134,947,399.60

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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.