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Finding the Fourth Proportional to 200,658.60, 301,031.10 and 60,431.40

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Solution

The fourth proportional to 200,658.60, 301,031.10 and 60,431.40 is: 90,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,658.60 : 301,031.10 = 60,431.40 : x
  2. Step 2: Convert to fraction form
    200,658.60/301,031.10 = 60,431.40/x
  3. Step 3: Cross multiply
    200,658.60x = 301,031.10 × 60,431.40
  4. Step 4: Simplify right side
    200,658.60x = 18,191,730,816.54
  5. Step 5: Solve for x
    x = 18,191,730,816.54/200,658.60
  6. Step 6: Final answer
    x = 90,660.11

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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.