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Finding the Fourth Proportional to 486,328.68, 729,477.32 and 220,089.17

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Solution

The fourth proportional to 486,328.68, 729,477.32 and 220,089.17 is: 330,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,328.68 : 729,477.32 = 220,089.17 : x
  2. Step 2: Convert to fraction form
    486,328.68/729,477.32 = 220,089.17/x
  3. Step 3: Cross multiply
    486,328.68x = 729,477.32 × 220,089.17
  4. Step 4: Simplify right side
    486,328.68x = 160,550,058,615.87
  5. Step 5: Solve for x
    x = 160,550,058,615.87/486,328.68
  6. Step 6: Final answer
    x = 330,126.65

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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.