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Finding the Fourth Proportional to 278,830.60, 417,785.10 and 237,358.60

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Solution

The fourth proportional to 278,830.60, 417,785.10 and 237,358.60 is: 355,645.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,830.60 : 417,785.10 = 237,358.60 : x
  2. Step 2: Convert to fraction form
    278,830.60/417,785.10 = 237,358.60/x
  3. Step 3: Cross multiply
    278,830.60x = 417,785.10 × 237,358.60
  4. Step 4: Simplify right side
    278,830.60x = 99,164,886,436.86
  5. Step 5: Solve for x
    x = 99,164,886,436.86/278,830.60
  6. Step 6: Final answer
    x = 355,645.64

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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.