Home / 425,623.38-638,369.45-141,437.31

Finding the Fourth Proportional to 425,623.38, 638,369.45 and 141,437.31

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Solution

The fourth proportional to 425,623.38, 638,369.45 and 141,437.31 is: 212,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,623.38 : 638,369.45 = 141,437.31 : x
  2. Step 2: Convert to fraction form
    425,623.38/638,369.45 = 141,437.31/x
  3. Step 3: Cross multiply
    425,623.38x = 638,369.45 × 141,437.31
  4. Step 4: Simplify right side
    425,623.38x = 90,289,257,794.18
  5. Step 5: Solve for x
    x = 90,289,257,794.18/425,623.38
  6. Step 6: Final answer
    x = 212,134.16

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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.