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Finding the Fourth Proportional to 554,947.20, 832,420.80 and 199,972.80

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Solution

The fourth proportional to 554,947.20, 832,420.80 and 199,972.80 is: 299,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,947.20 : 832,420.80 = 199,972.80 : x
  2. Step 2: Convert to fraction form
    554,947.20/832,420.80 = 199,972.80/x
  3. Step 3: Cross multiply
    554,947.20x = 832,420.80 × 199,972.80
  4. Step 4: Simplify right side
    554,947.20x = 166,461,518,154.24
  5. Step 5: Solve for x
    x = 166,461,518,154.24/554,947.20
  6. Step 6: Final answer
    x = 299,959.20

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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.