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Finding the Fourth Proportional to 388,678.50, 583,017.75 and 108,203.04

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Solution

The fourth proportional to 388,678.50, 583,017.75 and 108,203.04 is: 162,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,678.50 : 583,017.75 = 108,203.04 : x
  2. Step 2: Convert to fraction form
    388,678.50/583,017.75 = 108,203.04/x
  3. Step 3: Cross multiply
    388,678.50x = 583,017.75 × 108,203.04
  4. Step 4: Simplify right side
    388,678.50x = 63,084,292,923.96
  5. Step 5: Solve for x
    x = 63,084,292,923.96/388,678.50
  6. Step 6: Final answer
    x = 162,304.56

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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.