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Finding the Fourth Proportional to 144,868.40, 217,302.60 and 121,540.40

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Solution

The fourth proportional to 144,868.40, 217,302.60 and 121,540.40 is: 182,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,868.40 : 217,302.60 = 121,540.40 : x
  2. Step 2: Convert to fraction form
    144,868.40/217,302.60 = 121,540.40/x
  3. Step 3: Cross multiply
    144,868.40x = 217,302.60 × 121,540.40
  4. Step 4: Simplify right side
    144,868.40x = 26,411,044,925.04
  5. Step 5: Solve for x
    x = 26,411,044,925.04/144,868.40
  6. Step 6: Final answer
    x = 182,310.60

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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.