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Finding the Fourth Proportional to 368,612,161.52, 553,000,713.24 and 138,583,239.44

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Solution

The fourth proportional to 368,612,161.52, 553,000,713.24 and 138,583,239.44 is: 207,905,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,612,161.52 : 553,000,713.24 = 138,583,239.44 : x
  2. Step 2: Convert to fraction form
    368,612,161.52/553,000,713.24 = 138,583,239.44/x
  3. Step 3: Cross multiply
    368,612,161.52x = 553,000,713.24 × 138,583,239.44
  4. Step 4: Simplify right side
    368,612,161.52x = 76,636,630,253,429,696
  5. Step 5: Solve for x
    x = 76,636,630,253,429,696/368,612,161.52
  6. Step 6: Final answer
    x = 207,905,864.90

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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.