Home / 390,647.06-586,029.10-141,387.38

Finding the Fourth Proportional to 390,647.06, 586,029.10 and 141,387.38

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Solution

The fourth proportional to 390,647.06, 586,029.10 and 141,387.38 is: 212,102.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,647.06 : 586,029.10 = 141,387.38 : x
  2. Step 2: Convert to fraction form
    390,647.06/586,029.10 = 141,387.38/x
  3. Step 3: Cross multiply
    390,647.06x = 586,029.10 × 141,387.38
  4. Step 4: Simplify right side
    390,647.06x = 82,857,120,164.36
  5. Step 5: Solve for x
    x = 82,857,120,164.36/390,647.06
  6. Step 6: Final answer
    x = 212,102.25

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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.