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Finding the Fourth Proportional to 208,117.80, 312,176.70 and 75,002.40

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Solution

The fourth proportional to 208,117.80, 312,176.70 and 75,002.40 is: 112,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,117.80 : 312,176.70 = 75,002.40 : x
  2. Step 2: Convert to fraction form
    208,117.80/312,176.70 = 75,002.40/x
  3. Step 3: Cross multiply
    208,117.80x = 312,176.70 × 75,002.40
  4. Step 4: Simplify right side
    208,117.80x = 23,414,001,724.08
  5. Step 5: Solve for x
    x = 23,414,001,724.08/208,117.80
  6. Step 6: Final answer
    x = 112,503.60

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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.