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Finding the Fourth Proportional to 499,368.30, 749,052.45 and 199,992.30

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Solution

The fourth proportional to 499,368.30, 749,052.45 and 199,992.30 is: 299,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,368.30 : 749,052.45 = 199,992.30 : x
  2. Step 2: Convert to fraction form
    499,368.30/749,052.45 = 199,992.30/x
  3. Step 3: Cross multiply
    499,368.30x = 749,052.45 × 199,992.30
  4. Step 4: Simplify right side
    499,368.30x = 149,804,722,296.14
  5. Step 5: Solve for x
    x = 149,804,722,296.14/499,368.30
  6. Step 6: Final answer
    x = 299,988.45

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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.