Home / 281,115.16-387,965.60-153,809.89

Finding the Fourth Proportional to 281,115.16, 387,965.60 and 153,809.89

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Solution

The fourth proportional to 281,115.16, 387,965.60 and 153,809.89 is: 212,272.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,115.16 : 387,965.60 = 153,809.89 : x
  2. Step 2: Convert to fraction form
    281,115.16/387,965.60 = 153,809.89/x
  3. Step 3: Cross multiply
    281,115.16x = 387,965.60 × 153,809.89
  4. Step 4: Simplify right side
    281,115.16x = 59,672,945,097.61
  5. Step 5: Solve for x
    x = 59,672,945,097.61/281,115.16
  6. Step 6: Final answer
    x = 212,272.24

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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.