Home / 281,120.16-387,972.52-153,814.88

Finding the Fourth Proportional to 281,120.16, 387,972.52 and 153,814.88

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Solution

The fourth proportional to 281,120.16, 387,972.52 and 153,814.88 is: 212,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,120.16 : 387,972.52 = 153,814.88 : x
  2. Step 2: Convert to fraction form
    281,120.16/387,972.52 = 153,814.88/x
  3. Step 3: Cross multiply
    281,120.16x = 387,972.52 × 153,814.88
  4. Step 4: Simplify right side
    281,120.16x = 59,675,946,607.10
  5. Step 5: Solve for x
    x = 59,675,946,607.10/281,120.16
  6. Step 6: Final answer
    x = 212,279.14

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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.