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Finding the Fourth Proportional to 252,005.40, 378,785.70 and 247,339.80

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Solution

The fourth proportional to 252,005.40, 378,785.70 and 247,339.80 is: 371,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,005.40 : 378,785.70 = 247,339.80 : x
  2. Step 2: Convert to fraction form
    252,005.40/378,785.70 = 247,339.80/x
  3. Step 3: Cross multiply
    252,005.40x = 378,785.70 × 247,339.80
  4. Step 4: Simplify right side
    252,005.40x = 93,688,779,280.86
  5. Step 5: Solve for x
    x = 93,688,779,280.86/252,005.40
  6. Step 6: Final answer
    x = 371,772.90

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1.5x scale

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.