Home / 281,031.28-387,814.90-153,704.12

Finding the Fourth Proportional to 281,031.28, 387,814.90 and 153,704.12

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Solution

The fourth proportional to 281,031.28, 387,814.90 and 153,704.12 is: 212,107.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,031.28 : 387,814.90 = 153,704.12 : x
  2. Step 2: Convert to fraction form
    281,031.28/387,814.90 = 153,704.12/x
  3. Step 3: Cross multiply
    281,031.28x = 387,814.90 × 153,704.12
  4. Step 4: Simplify right side
    281,031.28x = 59,608,747,927.39
  5. Step 5: Solve for x
    x = 59,608,747,927.39/281,031.28
  6. Step 6: Final answer
    x = 212,107.16

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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.