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Finding the Fourth Proportional to 608,947.20, 913,420.80 and 188,265.60

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Solution

The fourth proportional to 608,947.20, 913,420.80 and 188,265.60 is: 282,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,947.20 : 913,420.80 = 188,265.60 : x
  2. Step 2: Convert to fraction form
    608,947.20/913,420.80 = 188,265.60/x
  3. Step 3: Cross multiply
    608,947.20x = 913,420.80 × 188,265.60
  4. Step 4: Simplify right side
    608,947.20x = 171,965,714,964.48
  5. Step 5: Solve for x
    x = 171,965,714,964.48/608,947.20
  6. Step 6: Final answer
    x = 282,398.40

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Double scale
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Similar ratio
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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.