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Finding the Fourth Proportional to 281,070.82, 387,915.31 and 158,588.40

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Solution

The fourth proportional to 281,070.82, 387,915.31 and 158,588.40 is: 218,873.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,070.82 : 387,915.31 = 158,588.40 : x
  2. Step 2: Convert to fraction form
    281,070.82/387,915.31 = 158,588.40/x
  3. Step 3: Cross multiply
    281,070.82x = 387,915.31 × 158,588.40
  4. Step 4: Simplify right side
    281,070.82x = 61,518,868,348.40
  5. Step 5: Solve for x
    x = 61,518,868,348.40/281,070.82
  6. Step 6: Final answer
    x = 218,873.19

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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.