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Finding the Fourth Proportional to 657,998.70, 986,998.05 and 159,362.70

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Solution

The fourth proportional to 657,998.70, 986,998.05 and 159,362.70 is: 239,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,998.70 : 986,998.05 = 159,362.70 : x
  2. Step 2: Convert to fraction form
    657,998.70/986,998.05 = 159,362.70/x
  3. Step 3: Cross multiply
    657,998.70x = 986,998.05 × 159,362.70
  4. Step 4: Simplify right side
    657,998.70x = 157,290,674,142.74
  5. Step 5: Solve for x
    x = 157,290,674,142.74/657,998.70
  6. Step 6: Final answer
    x = 239,044.05

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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.