Home / 385,273.13-578,172.20-135,955.13

Finding the Fourth Proportional to 385,273.13, 578,172.20 and 135,955.13

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Solution

The fourth proportional to 385,273.13, 578,172.20 and 135,955.13 is: 204,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,273.13 : 578,172.20 = 135,955.13 : x
  2. Step 2: Convert to fraction form
    385,273.13/578,172.20 = 135,955.13/x
  3. Step 3: Cross multiply
    385,273.13x = 578,172.20 × 135,955.13
  4. Step 4: Simplify right side
    385,273.13x = 78,605,473,042.75
  5. Step 5: Solve for x
    x = 78,605,473,042.75/385,273.13
  6. Step 6: Final answer
    x = 204,025.32

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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.