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Finding the Fourth Proportional to 262,488,686.40, 393,695,704.80 and 89,973,460.80

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Solution

The fourth proportional to 262,488,686.40, 393,695,704.80 and 89,973,460.80 is: 134,947,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,488,686.40 : 393,695,704.80 = 89,973,460.80 : x
  2. Step 2: Convert to fraction form
    262,488,686.40/393,695,704.80 = 89,973,460.80/x
  3. Step 3: Cross multiply
    262,488,686.40x = 393,695,704.80 × 89,973,460.80
  4. Step 4: Simplify right side
    262,488,686.40x = 35,422,165,062,951,172
  5. Step 5: Solve for x
    x = 35,422,165,062,951,172/262,488,686.40
  6. Step 6: Final answer
    x = 134,947,397.35

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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.