Home / 330,931.04-496,387.60-81,615.20

Finding the Fourth Proportional to 330,931.04, 496,387.60 and 81,615.20

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Solution

The fourth proportional to 330,931.04, 496,387.60 and 81,615.20 is: 122,420.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,931.04 : 496,387.60 = 81,615.20 : x
  2. Step 2: Convert to fraction form
    330,931.04/496,387.60 = 81,615.20/x
  3. Step 3: Cross multiply
    330,931.04x = 496,387.60 × 81,615.20
  4. Step 4: Simplify right side
    330,931.04x = 40,512,773,251.52
  5. Step 5: Solve for x
    x = 40,512,773,251.52/330,931.04
  6. Step 6: Final answer
    x = 122,420.59

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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.