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Finding the Fourth Proportional to 218,423.43, 301,431.51 and 127,788.89

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Solution

The fourth proportional to 218,423.43, 301,431.51 and 127,788.89 is: 176,352.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,423.43 : 301,431.51 = 127,788.89 : x
  2. Step 2: Convert to fraction form
    218,423.43/301,431.51 = 127,788.89/x
  3. Step 3: Cross multiply
    218,423.43x = 301,431.51 × 127,788.89
  4. Step 4: Simplify right side
    218,423.43x = 38,519,596,566.77
  5. Step 5: Solve for x
    x = 38,519,596,566.77/218,423.43
  6. Step 6: Final answer
    x = 176,352.86

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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.