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Finding the Fourth Proportional to 356,545.40, 492,046.32 and 203,608.52

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Solution

The fourth proportional to 356,545.40, 492,046.32 and 203,608.52 is: 280,987.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,545.40 : 492,046.32 = 203,608.52 : x
  2. Step 2: Convert to fraction form
    356,545.40/492,046.32 = 203,608.52/x
  3. Step 3: Cross multiply
    356,545.40x = 492,046.32 × 203,608.52
  4. Step 4: Simplify right side
    356,545.40x = 100,184,822,986.65
  5. Step 5: Solve for x
    x = 100,184,822,986.65/356,545.40
  6. Step 6: Final answer
    x = 280,987.56

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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.