Home / 208,031.20-311,864.55-141,254.80

Finding the Fourth Proportional to 208,031.20, 311,864.55 and 141,254.80

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Solution

The fourth proportional to 208,031.20, 311,864.55 and 141,254.80 is: 211,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,031.20 : 311,864.55 = 141,254.80 : x
  2. Step 2: Convert to fraction form
    208,031.20/311,864.55 = 141,254.80/x
  3. Step 3: Cross multiply
    208,031.20x = 311,864.55 × 141,254.80
  4. Step 4: Simplify right side
    208,031.20x = 44,052,364,637.34
  5. Step 5: Solve for x
    x = 44,052,364,637.34/208,031.20
  6. Step 6: Final answer
    x = 211,758.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.