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Finding the Fourth Proportional to 312,031.80, 468,047.70 and 125,177.40

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Solution

The fourth proportional to 312,031.80, 468,047.70 and 125,177.40 is: 187,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,031.80 : 468,047.70 = 125,177.40 : x
  2. Step 2: Convert to fraction form
    312,031.80/468,047.70 = 125,177.40/x
  3. Step 3: Cross multiply
    312,031.80x = 468,047.70 × 125,177.40
  4. Step 4: Simplify right side
    312,031.80x = 58,588,994,161.98
  5. Step 5: Solve for x
    x = 58,588,994,161.98/312,031.80
  6. Step 6: Final answer
    x = 187,766.10

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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.