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Finding the Fourth Proportional to 319,545.40, 479,250.90 and 161,625.40

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Solution

The fourth proportional to 319,545.40, 479,250.90 and 161,625.40 is: 242,404.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,545.40 : 479,250.90 = 161,625.40 : x
  2. Step 2: Convert to fraction form
    319,545.40/479,250.90 = 161,625.40/x
  3. Step 3: Cross multiply
    319,545.40x = 479,250.90 × 161,625.40
  4. Step 4: Simplify right side
    319,545.40x = 77,459,118,412.86
  5. Step 5: Solve for x
    x = 77,459,118,412.86/319,545.40
  6. Step 6: Final answer
    x = 242,404.11

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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.