Home / 278,262.72-417,312-118,338.35

Finding the Fourth Proportional to 278,262.72, 417,312 and 118,338.35

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Solution

The fourth proportional to 278,262.72, 417,312 and 118,338.35 is: 177,472.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,262.72 : 417,312 = 118,338.35 : x
  2. Step 2: Convert to fraction form
    278,262.72/417,312 = 118,338.35/x
  3. Step 3: Cross multiply
    278,262.72x = 417,312 × 118,338.35
  4. Step 4: Simplify right side
    278,262.72x = 49,384,013,515.20
  5. Step 5: Solve for x
    x = 49,384,013,515.20/278,262.72
  6. Step 6: Final answer
    x = 177,472.62

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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.