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Finding the Fourth Proportional to 144,479.27, 216,720.39 and 64,521.30

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Solution

The fourth proportional to 144,479.27, 216,720.39 and 64,521.30 is: 96,782.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,479.27 : 216,720.39 = 64,521.30 : x
  2. Step 2: Convert to fraction form
    144,479.27/216,720.39 = 64,521.30/x
  3. Step 3: Cross multiply
    144,479.27x = 216,720.39 × 64,521.30
  4. Step 4: Simplify right side
    144,479.27x = 13,983,081,657.18
  5. Step 5: Solve for x
    x = 13,983,081,657.18/144,479.27
  6. Step 6: Final answer
    x = 96,782.62

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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.