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Finding the Fourth Proportional to 257,815,854.80, 386,156,911.80 and 223,803,630.80

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Solution

The fourth proportional to 257,815,854.80, 386,156,911.80 and 223,803,630.80 is: 335,213,359.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,815,854.80 : 386,156,911.80 = 223,803,630.80 : x
  2. Step 2: Convert to fraction form
    257,815,854.80/386,156,911.80 = 223,803,630.80/x
  3. Step 3: Cross multiply
    257,815,854.80x = 386,156,911.80 × 223,803,630.80
  4. Step 4: Simplify right side
    257,815,854.80x = 86,423,318,919,355,376
  5. Step 5: Solve for x
    x = 86,423,318,919,355,376/257,815,854.80
  6. Step 6: Final answer
    x = 335,213,359.89

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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.