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Finding the Fourth Proportional to 247,321.60, 341,306.40 and 139,892.80

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Solution

The fourth proportional to 247,321.60, 341,306.40 and 139,892.80 is: 193,053.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,321.60 : 341,306.40 = 139,892.80 : x
  2. Step 2: Convert to fraction form
    247,321.60/341,306.40 = 139,892.80/x
  3. Step 3: Cross multiply
    247,321.60x = 341,306.40 × 139,892.80
  4. Step 4: Simplify right side
    247,321.60x = 47,746,307,953.92
  5. Step 5: Solve for x
    x = 47,746,307,953.92/247,321.60
  6. Step 6: Final answer
    x = 193,053.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.