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Finding the Fourth Proportional to 144,279.84, 216,430.65 and 43,069.91

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Solution

The fourth proportional to 144,279.84, 216,430.65 and 43,069.91 is: 64,608.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,279.84 : 216,430.65 = 43,069.91 : x
  2. Step 2: Convert to fraction form
    144,279.84/216,430.65 = 43,069.91/x
  3. Step 3: Cross multiply
    144,279.84x = 216,430.65 × 43,069.91
  4. Step 4: Simplify right side
    144,279.84x = 9,321,648,616.74
  5. Step 5: Solve for x
    x = 9,321,648,616.74/144,279.84
  6. Step 6: Final answer
    x = 64,608.12

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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.