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Finding the Fourth Proportional to 388,994.40, 583,504.56 and 108,488.16

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Solution

The fourth proportional to 388,994.40, 583,504.56 and 108,488.16 is: 162,735.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,994.40 : 583,504.56 = 108,488.16 : x
  2. Step 2: Convert to fraction form
    388,994.40/583,504.56 = 108,488.16/x
  3. Step 3: Cross multiply
    388,994.40x = 583,504.56 × 108,488.16
  4. Step 4: Simplify right side
    388,994.40x = 63,303,336,066.01
  5. Step 5: Solve for x
    x = 63,303,336,066.01/388,994.40
  6. Step 6: Final answer
    x = 162,735.85

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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.