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Finding the Fourth Proportional to 231,612.80, 348,002.40 and 147,413.30

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Solution

The fourth proportional to 231,612.80, 348,002.40 and 147,413.30 is: 221,491.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,612.80 : 348,002.40 = 147,413.30 : x
  2. Step 2: Convert to fraction form
    231,612.80/348,002.40 = 147,413.30/x
  3. Step 3: Cross multiply
    231,612.80x = 348,002.40 × 147,413.30
  4. Step 4: Simplify right side
    231,612.80x = 51,300,182,191.92
  5. Step 5: Solve for x
    x = 51,300,182,191.92/231,612.80
  6. Step 6: Final answer
    x = 221,491.14

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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.