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Finding the Fourth Proportional to 206,798.76, 310,000.98 and 66,458.76

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Solution

The fourth proportional to 206,798.76, 310,000.98 and 66,458.76 is: 99,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,798.76 : 310,000.98 = 66,458.76 : x
  2. Step 2: Convert to fraction form
    206,798.76/310,000.98 = 66,458.76/x
  3. Step 3: Cross multiply
    206,798.76x = 310,000.98 × 66,458.76
  4. Step 4: Simplify right side
    206,798.76x = 20,602,280,729.58
  5. Step 5: Solve for x
    x = 20,602,280,729.58/206,798.76
  6. Step 6: Final answer
    x = 99,624.78

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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.