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Finding the Fourth Proportional to 331,343.20, 497,079.60 and 141,803.20

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Solution

The fourth proportional to 331,343.20, 497,079.60 and 141,803.20 is: 212,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,343.20 : 497,079.60 = 141,803.20 : x
  2. Step 2: Convert to fraction form
    331,343.20/497,079.60 = 141,803.20/x
  3. Step 3: Cross multiply
    331,343.20x = 497,079.60 × 141,803.20
  4. Step 4: Simplify right side
    331,343.20x = 70,487,477,934.72
  5. Step 5: Solve for x
    x = 70,487,477,934.72/331,343.20
  6. Step 6: Final answer
    x = 212,732.53

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1.5x scale

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.