Home / 385,179.13-531,545.38-215,413.93

Finding the Fourth Proportional to 385,179.13, 531,545.38 and 215,413.93

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Solution

The fourth proportional to 385,179.13, 531,545.38 and 215,413.93 is: 297,270.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,179.13 : 531,545.38 = 215,413.93 : x
  2. Step 2: Convert to fraction form
    385,179.13/531,545.38 = 215,413.93/x
  3. Step 3: Cross multiply
    385,179.13x = 531,545.38 × 215,413.93
  4. Step 4: Simplify right side
    385,179.13x = 114,502,279,279.14
  5. Step 5: Solve for x
    x = 114,502,279,279.14/385,179.13
  6. Step 6: Final answer
    x = 297,270.21

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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.