Home / 328,221.05-492,331.64-103,598.98

Finding the Fourth Proportional to 328,221.05, 492,331.64 and 103,598.98

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Solution

The fourth proportional to 328,221.05, 492,331.64 and 103,598.98 is: 155,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,221.05 : 492,331.64 = 103,598.98 : x
  2. Step 2: Convert to fraction form
    328,221.05/492,331.64 = 103,598.98/x
  3. Step 3: Cross multiply
    328,221.05x = 492,331.64 × 103,598.98
  4. Step 4: Simplify right side
    328,221.05x = 51,005,053,976.90
  5. Step 5: Solve for x
    x = 51,005,053,976.90/328,221.05
  6. Step 6: Final answer
    x = 155,398.49

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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.