Home / 257,816.16-386,649.18-89,329.68

Finding the Fourth Proportional to 257,816.16, 386,649.18 and 89,329.68

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Solution

The fourth proportional to 257,816.16, 386,649.18 and 89,329.68 is: 133,968.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,816.16 : 386,649.18 = 89,329.68 : x
  2. Step 2: Convert to fraction form
    257,816.16/386,649.18 = 89,329.68/x
  3. Step 3: Cross multiply
    257,816.16x = 386,649.18 × 89,329.68
  4. Step 4: Simplify right side
    257,816.16x = 34,539,247,521.66
  5. Step 5: Solve for x
    x = 34,539,247,521.66/257,816.16
  6. Step 6: Final answer
    x = 133,968.51

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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.