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Finding the Fourth Proportional to 389,670.64, 584,674.34 and 209,545.53

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Solution

The fourth proportional to 389,670.64, 584,674.34 and 209,545.53 is: 314,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,670.64 : 584,674.34 = 209,545.53 : x
  2. Step 2: Convert to fraction form
    389,670.64/584,674.34 = 209,545.53/x
  3. Step 3: Cross multiply
    389,670.64x = 584,674.34 × 209,545.53
  4. Step 4: Simplify right side
    389,670.64x = 122,515,896,269.28
  5. Step 5: Solve for x
    x = 122,515,896,269.28/389,670.64
  6. Step 6: Final answer
    x = 314,408.85

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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.