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Finding the Fourth Proportional to 144,299.32, 216,492.78 and 69,398.21

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Solution

The fourth proportional to 144,299.32, 216,492.78 and 69,398.21 is: 104,118.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,299.32 : 216,492.78 = 69,398.21 : x
  2. Step 2: Convert to fraction form
    144,299.32/216,492.78 = 69,398.21/x
  3. Step 3: Cross multiply
    144,299.32x = 216,492.78 × 69,398.21
  4. Step 4: Simplify right side
    144,299.32x = 15,024,211,409.92
  5. Step 5: Solve for x
    x = 15,024,211,409.92/144,299.32
  6. Step 6: Final answer
    x = 104,118.38

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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.