Home / 325,129.20-487,002.60-213,154.80

Finding the Fourth Proportional to 325,129.20, 487,002.60 and 213,154.80

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Solution

The fourth proportional to 325,129.20, 487,002.60 and 213,154.80 is: 319,279.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,129.20 : 487,002.60 = 213,154.80 : x
  2. Step 2: Convert to fraction form
    325,129.20/487,002.60 = 213,154.80/x
  3. Step 3: Cross multiply
    325,129.20x = 487,002.60 × 213,154.80
  4. Step 4: Simplify right side
    325,129.20x = 103,806,941,802.48
  5. Step 5: Solve for x
    x = 103,806,941,802.48/325,129.20
  6. Step 6: Final answer
    x = 319,279.05

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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.