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Finding the Fourth Proportional to 425,992.29, 638,769.74 and 141,580.23

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Solution

The fourth proportional to 425,992.29, 638,769.74 and 141,580.23 is: 212,297.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,992.29 : 638,769.74 = 141,580.23 : x
  2. Step 2: Convert to fraction form
    425,992.29/638,769.74 = 141,580.23/x
  3. Step 3: Cross multiply
    425,992.29x = 638,769.74 × 141,580.23
  4. Step 4: Simplify right side
    425,992.29x = 90,437,165,998.34
  5. Step 5: Solve for x
    x = 90,437,165,998.34/425,992.29
  6. Step 6: Final answer
    x = 212,297.66

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1.5x scale

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.