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Finding the Fourth Proportional to 560,002.86, 840,007.32 and 139,278.73

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Solution

The fourth proportional to 560,002.86, 840,007.32 and 139,278.73 is: 208,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,002.86 : 840,007.32 = 139,278.73 : x
  2. Step 2: Convert to fraction form
    560,002.86/840,007.32 = 139,278.73/x
  3. Step 3: Cross multiply
    560,002.86x = 840,007.32 × 139,278.73
  4. Step 4: Simplify right side
    560,002.86x = 116,995,152,720.30
  5. Step 5: Solve for x
    x = 116,995,152,720.30/560,002.86
  6. Step 6: Final answer
    x = 208,918.85

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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.