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Finding the Fourth Proportional to 188,437.20, 282,655.80 and 109,640.40

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Solution

The fourth proportional to 188,437.20, 282,655.80 and 109,640.40 is: 164,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,437.20 : 282,655.80 = 109,640.40 : x
  2. Step 2: Convert to fraction form
    188,437.20/282,655.80 = 109,640.40/x
  3. Step 3: Cross multiply
    188,437.20x = 282,655.80 × 109,640.40
  4. Step 4: Simplify right side
    188,437.20x = 30,990,494,974.32
  5. Step 5: Solve for x
    x = 30,990,494,974.32/188,437.20
  6. Step 6: Final answer
    x = 164,460.60

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1.5x scale

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.