Home / 278,500.48-417,683.51-128,596.66

Finding the Fourth Proportional to 278,500.48, 417,683.51 and 128,596.66

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Solution

The fourth proportional to 278,500.48, 417,683.51 and 128,596.66 is: 192,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,500.48 : 417,683.51 = 128,596.66 : x
  2. Step 2: Convert to fraction form
    278,500.48/417,683.51 = 128,596.66/x
  3. Step 3: Cross multiply
    278,500.48x = 417,683.51 × 128,596.66
  4. Step 4: Simplify right side
    278,500.48x = 53,712,705,829.27
  5. Step 5: Solve for x
    x = 53,712,705,829.27/278,500.48
  6. Step 6: Final answer
    x = 192,863.96

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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.