Home / 385,422.16-578,091.72-101,141.36

Finding the Fourth Proportional to 385,422.16, 578,091.72 and 101,141.36

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Solution

The fourth proportional to 385,422.16, 578,091.72 and 101,141.36 is: 151,701.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,422.16 : 578,091.72 = 101,141.36 : x
  2. Step 2: Convert to fraction form
    385,422.16/578,091.72 = 101,141.36/x
  3. Step 3: Cross multiply
    385,422.16x = 578,091.72 × 101,141.36
  4. Step 4: Simplify right side
    385,422.16x = 58,468,982,765.54
  5. Step 5: Solve for x
    x = 58,468,982,765.54/385,422.16
  6. Step 6: Final answer
    x = 151,701.14

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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.