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Finding the Fourth Proportional to 144,207.40, 216,224.70 and 74,223.40

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Solution

The fourth proportional to 144,207.40, 216,224.70 and 74,223.40 is: 111,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,207.40 : 216,224.70 = 74,223.40 : x
  2. Step 2: Convert to fraction form
    144,207.40/216,224.70 = 74,223.40/x
  3. Step 3: Cross multiply
    144,207.40x = 216,224.70 × 74,223.40
  4. Step 4: Simplify right side
    144,207.40x = 16,048,932,397.98
  5. Step 5: Solve for x
    x = 16,048,932,397.98/144,207.40
  6. Step 6: Final answer
    x = 111,290.63

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.