Home / 278,390.18-417,586.08-118,424.90

Finding the Fourth Proportional to 278,390.18, 417,586.08 and 118,424.90

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Solution

The fourth proportional to 278,390.18, 417,586.08 and 118,424.90 is: 177,637.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,390.18 : 417,586.08 = 118,424.90 : x
  2. Step 2: Convert to fraction form
    278,390.18/417,586.08 = 118,424.90/x
  3. Step 3: Cross multiply
    278,390.18x = 417,586.08 × 118,424.90
  4. Step 4: Simplify right side
    278,390.18x = 49,452,589,765.39
  5. Step 5: Solve for x
    x = 49,452,589,765.39/278,390.18
  6. Step 6: Final answer
    x = 177,637.69

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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.