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Finding the Fourth Proportional to 553,943.20, 830,914.80 and 179,966.20

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Solution

The fourth proportional to 553,943.20, 830,914.80 and 179,966.20 is: 269,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,943.20 : 830,914.80 = 179,966.20 : x
  2. Step 2: Convert to fraction form
    553,943.20/830,914.80 = 179,966.20/x
  3. Step 3: Cross multiply
    553,943.20x = 830,914.80 × 179,966.20
  4. Step 4: Simplify right side
    553,943.20x = 149,536,579,079.76
  5. Step 5: Solve for x
    x = 149,536,579,079.76/553,943.20
  6. Step 6: Final answer
    x = 269,949.30

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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.