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Finding the Fourth Proportional to 262,488,690.40, 393,695,710.80 and 89,973,464.80

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Solution

The fourth proportional to 262,488,690.40, 393,695,710.80 and 89,973,464.80 is: 134,947,403.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,488,690.40 : 393,695,710.80 = 89,973,464.80 : x
  2. Step 2: Convert to fraction form
    262,488,690.40/393,695,710.80 = 89,973,464.80/x
  3. Step 3: Cross multiply
    262,488,690.40x = 393,695,710.80 × 89,973,464.80
  4. Step 4: Simplify right side
    262,488,690.40x = 35,422,167,177,574,780
  5. Step 5: Solve for x
    x = 35,422,167,177,574,780/262,488,690.40
  6. Step 6: Final answer
    x = 134,947,403.35

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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.