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Finding the Fourth Proportional to 425,638.18, 587,016.48 and 303,545.26

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Solution

The fourth proportional to 425,638.18, 587,016.48 and 303,545.26 is: 418,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,638.18 : 587,016.48 = 303,545.26 : x
  2. Step 2: Convert to fraction form
    425,638.18/587,016.48 = 303,545.26/x
  3. Step 3: Cross multiply
    425,638.18x = 587,016.48 × 303,545.26
  4. Step 4: Simplify right side
    425,638.18x = 178,186,070,045.89
  5. Step 5: Solve for x
    x = 178,186,070,045.89/425,638.18
  6. Step 6: Final answer
    x = 418,632.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.