Home / 280,267.96-386,778-152,951.76

Finding the Fourth Proportional to 280,267.96, 386,778 and 152,951.76

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Solution

The fourth proportional to 280,267.96, 386,778 and 152,951.76 is: 211,077.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,267.96 : 386,778 = 152,951.76 : x
  2. Step 2: Convert to fraction form
    280,267.96/386,778 = 152,951.76/x
  3. Step 3: Cross multiply
    280,267.96x = 386,778 × 152,951.76
  4. Step 4: Simplify right side
    280,267.96x = 59,158,375,829.28
  5. Step 5: Solve for x
    x = 59,158,375,829.28/280,267.96
  6. Step 6: Final answer
    x = 211,077.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.