Home / 257,730.18-386,502.57-89,204.76

Finding the Fourth Proportional to 257,730.18, 386,502.57 and 89,204.76

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Solution

The fourth proportional to 257,730.18, 386,502.57 and 89,204.76 is: 133,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,730.18 : 386,502.57 = 89,204.76 : x
  2. Step 2: Convert to fraction form
    257,730.18/386,502.57 = 89,204.76/x
  3. Step 3: Cross multiply
    257,730.18x = 386,502.57 × 89,204.76
  4. Step 4: Simplify right side
    257,730.18x = 34,477,868,996.23
  5. Step 5: Solve for x
    x = 34,477,868,996.23/257,730.18
  6. Step 6: Final answer
    x = 133,775.05

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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.