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Finding the Fourth Proportional to 388,995.40, 583,506.06 and 108,489.16

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Solution

The fourth proportional to 388,995.40, 583,506.06 and 108,489.16 is: 162,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,995.40 : 583,506.06 = 108,489.16 : x
  2. Step 2: Convert to fraction form
    388,995.40/583,506.06 = 108,489.16/x
  3. Step 3: Cross multiply
    388,995.40x = 583,506.06 × 108,489.16
  4. Step 4: Simplify right side
    388,995.40x = 63,304,082,304.31
  5. Step 5: Solve for x
    x = 63,304,082,304.31/388,995.40
  6. Step 6: Final answer
    x = 162,737.35

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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.