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Finding the Fourth Proportional to 553,938.20, 830,907.30 and 179,961.20

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Solution

The fourth proportional to 553,938.20, 830,907.30 and 179,961.20 is: 269,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,938.20 : 830,907.30 = 179,961.20 : x
  2. Step 2: Convert to fraction form
    553,938.20/830,907.30 = 179,961.20/x
  3. Step 3: Cross multiply
    553,938.20x = 830,907.30 × 179,961.20
  4. Step 4: Simplify right side
    553,938.20x = 149,531,074,796.76
  5. Step 5: Solve for x
    x = 149,531,074,796.76/553,938.20
  6. Step 6: Final answer
    x = 269,941.80

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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.