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Finding the Fourth Proportional to 560,002.61, 840,006.95 and 139,278.48

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Solution

The fourth proportional to 560,002.61, 840,006.95 and 139,278.48 is: 208,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,002.61 : 840,006.95 = 139,278.48 : x
  2. Step 2: Convert to fraction form
    560,002.61/840,006.95 = 139,278.48/x
  3. Step 3: Cross multiply
    560,002.61x = 840,006.95 × 139,278.48
  4. Step 4: Simplify right side
    560,002.61x = 116,994,890,489.04
  5. Step 5: Solve for x
    x = 116,994,890,489.04/560,002.61
  6. Step 6: Final answer
    x = 208,918.48

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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.