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Finding the Fourth Proportional to 290,325.67, 400,655.76 and 159,505.01

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Solution

The fourth proportional to 290,325.67, 400,655.76 and 159,505.01 is: 220,120.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,325.67 : 400,655.76 = 159,505.01 : x
  2. Step 2: Convert to fraction form
    290,325.67/400,655.76 = 159,505.01/x
  3. Step 3: Cross multiply
    290,325.67x = 400,655.76 × 159,505.01
  4. Step 4: Simplify right side
    290,325.67x = 63,906,601,005.36
  5. Step 5: Solve for x
    x = 63,906,601,005.36/290,325.67
  6. Step 6: Final answer
    x = 220,120.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.