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Finding the Fourth Proportional to 218,253.26, 301,191.48 and 121,461.20

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Solution

The fourth proportional to 218,253.26, 301,191.48 and 121,461.20 is: 167,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,253.26 : 301,191.48 = 121,461.20 : x
  2. Step 2: Convert to fraction form
    218,253.26/301,191.48 = 121,461.20/x
  3. Step 3: Cross multiply
    218,253.26x = 301,191.48 × 121,461.20
  4. Step 4: Simplify right side
    218,253.26x = 36,583,076,854.57
  5. Step 5: Solve for x
    x = 36,583,076,854.57/218,253.26
  6. Step 6: Final answer
    x = 167,617.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.