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Finding the Fourth Proportional to 259,248.40, 388,289.40 and 154,272.40

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Solution

The fourth proportional to 259,248.40, 388,289.40 and 154,272.40 is: 231,061.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,248.40 : 388,289.40 = 154,272.40 : x
  2. Step 2: Convert to fraction form
    259,248.40/388,289.40 = 154,272.40/x
  3. Step 3: Cross multiply
    259,248.40x = 388,289.40 × 154,272.40
  4. Step 4: Simplify right side
    259,248.40x = 59,902,337,632.56
  5. Step 5: Solve for x
    x = 59,902,337,632.56/259,248.40
  6. Step 6: Final answer
    x = 231,061.55

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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.