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Finding the Fourth Proportional to 560,029.74, 840,047.65 and 139,305.62

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Solution

The fourth proportional to 560,029.74, 840,047.65 and 139,305.62 is: 208,959.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,029.74 : 840,047.65 = 139,305.62 : x
  2. Step 2: Convert to fraction form
    560,029.74/840,047.65 = 139,305.62/x
  3. Step 3: Cross multiply
    560,029.74x = 840,047.65 × 139,305.62
  4. Step 4: Simplify right side
    560,029.74x = 117,023,358,712.79
  5. Step 5: Solve for x
    x = 117,023,358,712.79/560,029.74
  6. Step 6: Final answer
    x = 208,959.19

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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.