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Finding the Fourth Proportional to 419,060.55, 628,688.43 and 119,545.23

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Solution

The fourth proportional to 419,060.55, 628,688.43 and 119,545.23 is: 179,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,060.55 : 628,688.43 = 119,545.23 : x
  2. Step 2: Convert to fraction form
    419,060.55/628,688.43 = 119,545.23/x
  3. Step 3: Cross multiply
    419,060.55x = 628,688.43 × 119,545.23
  4. Step 4: Simplify right side
    419,060.55x = 75,156,702,962.69
  5. Step 5: Solve for x
    x = 75,156,702,962.69/419,060.55
  6. Step 6: Final answer
    x = 179,345.69

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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.