Home / 278,822.40-417,998.47-120,931.93

Finding the Fourth Proportional to 278,822.40, 417,998.47 and 120,931.93

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Solution

The fourth proportional to 278,822.40, 417,998.47 and 120,931.93 is: 181,295.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,822.40 : 417,998.47 = 120,931.93 : x
  2. Step 2: Convert to fraction form
    278,822.40/417,998.47 = 120,931.93/x
  3. Step 3: Cross multiply
    278,822.40x = 417,998.47 × 120,931.93
  4. Step 4: Simplify right side
    278,822.40x = 50,549,361,714.15
  5. Step 5: Solve for x
    x = 50,549,361,714.15/278,822.40
  6. Step 6: Final answer
    x = 181,295.91

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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.