Home / 278,389.18-417,584.58-118,423.90

Finding the Fourth Proportional to 278,389.18, 417,584.58 and 118,423.90

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Solution

The fourth proportional to 278,389.18, 417,584.58 and 118,423.90 is: 177,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,389.18 : 417,584.58 = 118,423.90 : x
  2. Step 2: Convert to fraction form
    278,389.18/417,584.58 = 118,423.90/x
  3. Step 3: Cross multiply
    278,389.18x = 417,584.58 × 118,423.90
  4. Step 4: Simplify right side
    278,389.18x = 49,451,994,543.46
  5. Step 5: Solve for x
    x = 49,451,994,543.46/278,389.18
  6. Step 6: Final answer
    x = 177,636.19

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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.