Home / 257,728.95-386,500.73-89,203.50

Finding the Fourth Proportional to 257,728.95, 386,500.73 and 89,203.50

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Solution

The fourth proportional to 257,728.95, 386,500.73 and 89,203.50 is: 133,773.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,728.95 : 386,500.73 = 89,203.50 : x
  2. Step 2: Convert to fraction form
    257,728.95/386,500.73 = 89,203.50/x
  3. Step 3: Cross multiply
    257,728.95x = 386,500.73 × 89,203.50
  4. Step 4: Simplify right side
    257,728.95x = 34,477,217,422.54
  5. Step 5: Solve for x
    x = 34,477,217,422.54/257,728.95
  6. Step 6: Final answer
    x = 133,773.17

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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.