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Finding the Fourth Proportional to 331,391.20, 497,151.60 and 141,851.20

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Solution

The fourth proportional to 331,391.20, 497,151.60 and 141,851.20 is: 212,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,391.20 : 497,151.60 = 141,851.20 : x
  2. Step 2: Convert to fraction form
    331,391.20/497,151.60 = 141,851.20/x
  3. Step 3: Cross multiply
    331,391.20x = 497,151.60 × 141,851.20
  4. Step 4: Simplify right side
    331,391.20x = 70,521,551,041.92
  5. Step 5: Solve for x
    x = 70,521,551,041.92/331,391.20
  6. Step 6: Final answer
    x = 212,804.54

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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.