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Finding the Fourth Proportional to 591,436.80, 886,960.80 and 217,411.20

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Solution

The fourth proportional to 591,436.80, 886,960.80 and 217,411.20 is: 326,045.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,436.80 : 886,960.80 = 217,411.20 : x
  2. Step 2: Convert to fraction form
    591,436.80/886,960.80 = 217,411.20/x
  3. Step 3: Cross multiply
    591,436.80x = 886,960.80 × 217,411.20
  4. Step 4: Simplify right side
    591,436.80x = 192,835,211,880.96
  5. Step 5: Solve for x
    x = 192,835,211,880.96/591,436.80
  6. Step 6: Final answer
    x = 326,045.34

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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.