Home / 257,520.63-386,264.01-89,001.75

Finding the Fourth Proportional to 257,520.63, 386,264.01 and 89,001.75

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Solution

The fourth proportional to 257,520.63, 386,264.01 and 89,001.75 is: 133,496.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,520.63 : 386,264.01 = 89,001.75 : x
  2. Step 2: Convert to fraction form
    257,520.63/386,264.01 = 89,001.75/x
  3. Step 3: Cross multiply
    257,520.63x = 386,264.01 × 89,001.75
  4. Step 4: Simplify right side
    257,520.63x = 34,378,172,852.02
  5. Step 5: Solve for x
    x = 34,378,172,852.02/257,520.63
  6. Step 6: Final answer
    x = 133,496.77

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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.