Home / 457,401.40-686,102.10-141,890.20

Finding the Fourth Proportional to 457,401.40, 686,102.10 and 141,890.20

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Solution

The fourth proportional to 457,401.40, 686,102.10 and 141,890.20 is: 212,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,401.40 : 686,102.10 = 141,890.20 : x
  2. Step 2: Convert to fraction form
    457,401.40/686,102.10 = 141,890.20/x
  3. Step 3: Cross multiply
    457,401.40x = 686,102.10 × 141,890.20
  4. Step 4: Simplify right side
    457,401.40x = 97,351,164,189.42
  5. Step 5: Solve for x
    x = 97,351,164,189.42/457,401.40
  6. Step 6: Final answer
    x = 212,835.30

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Similar ratio
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1.5x scale

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.