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Finding the Fourth Proportional to 247,851.99, 342,036.89 and 140,442.95

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Solution

The fourth proportional to 247,851.99, 342,036.89 and 140,442.95 is: 193,811.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,851.99 : 342,036.89 = 140,442.95 : x
  2. Step 2: Convert to fraction form
    247,851.99/342,036.89 = 140,442.95/x
  3. Step 3: Cross multiply
    247,851.99x = 342,036.89 × 140,442.95
  4. Step 4: Simplify right side
    247,851.99x = 48,036,667,428.03
  5. Step 5: Solve for x
    x = 48,036,667,428.03/247,851.99
  6. Step 6: Final answer
    x = 193,811.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.