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Finding the Fourth Proportional to 296,981.78, 445,473.54 and 72,342.32

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Solution

The fourth proportional to 296,981.78, 445,473.54 and 72,342.32 is: 108,513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,981.78 : 445,473.54 = 72,342.32 : x
  2. Step 2: Convert to fraction form
    296,981.78/445,473.54 = 72,342.32/x
  3. Step 3: Cross multiply
    296,981.78x = 445,473.54 × 72,342.32
  4. Step 4: Simplify right side
    296,981.78x = 32,226,587,154.85
  5. Step 5: Solve for x
    x = 32,226,587,154.85/296,981.78
  6. Step 6: Final answer
    x = 108,513.69

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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.