Home / 218,413.65-301,327.07-135,588.78

Finding the Fourth Proportional to 218,413.65, 301,327.07 and 135,588.78

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Solution

The fourth proportional to 218,413.65, 301,327.07 and 135,588.78 is: 187,060.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,413.65 : 301,327.07 = 135,588.78 : x
  2. Step 2: Convert to fraction form
    218,413.65/301,327.07 = 135,588.78/x
  3. Step 3: Cross multiply
    218,413.65x = 301,327.07 × 135,588.78
  4. Step 4: Simplify right side
    218,413.65x = 40,856,569,802.27
  5. Step 5: Solve for x
    x = 40,856,569,802.27/218,413.65
  6. Step 6: Final answer
    x = 187,060.51

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1.5x scale

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.