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Finding the Fourth Proportional to 218,381.61, 301,366.49 and 122,888.40

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Solution

The fourth proportional to 218,381.61, 301,366.49 and 122,888.40 is: 169,585.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,381.61 : 301,366.49 = 122,888.40 : x
  2. Step 2: Convert to fraction form
    218,381.61/301,366.49 = 122,888.40/x
  3. Step 3: Cross multiply
    218,381.61x = 301,366.49 × 122,888.40
  4. Step 4: Simplify right side
    218,381.61x = 37,034,445,769.72
  5. Step 5: Solve for x
    x = 37,034,445,769.72/218,381.61
  6. Step 6: Final answer
    x = 169,585.92

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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.