Home / 257,590.20-386,420.47-89,065.28

Finding the Fourth Proportional to 257,590.20, 386,420.47 and 89,065.28

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Solution

The fourth proportional to 257,590.20, 386,420.47 and 89,065.28 is: 133,610.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,590.20 : 386,420.47 = 89,065.28 : x
  2. Step 2: Convert to fraction form
    257,590.20/386,420.47 = 89,065.28/x
  3. Step 3: Cross multiply
    257,590.20x = 386,420.47 × 89,065.28
  4. Step 4: Simplify right side
    257,590.20x = 34,416,646,230.32
  5. Step 5: Solve for x
    x = 34,416,646,230.32/257,590.20
  6. Step 6: Final answer
    x = 133,610.08

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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.