Home / 280,981.89-387,758.07-153,654.75

Finding the Fourth Proportional to 280,981.89, 387,758.07 and 153,654.75

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Solution

The fourth proportional to 280,981.89, 387,758.07 and 153,654.75 is: 212,045.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,981.89 : 387,758.07 = 153,654.75 : x
  2. Step 2: Convert to fraction form
    280,981.89/387,758.07 = 153,654.75/x
  3. Step 3: Cross multiply
    280,981.89x = 387,758.07 × 153,654.75
  4. Step 4: Simplify right side
    280,981.89x = 59,580,869,306.33
  5. Step 5: Solve for x
    x = 59,580,869,306.33/280,981.89
  6. Step 6: Final answer
    x = 212,045.23

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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.