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Finding the Fourth Proportional to 308,275.04, 425,413.14 and 172,305.20

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Solution

The fourth proportional to 308,275.04, 425,413.14 and 172,305.20 is: 237,777.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,275.04 : 425,413.14 = 172,305.20 : x
  2. Step 2: Convert to fraction form
    308,275.04/425,413.14 = 172,305.20/x
  3. Step 3: Cross multiply
    308,275.04x = 425,413.14 × 172,305.20
  4. Step 4: Simplify right side
    308,275.04x = 73,300,896,170.33
  5. Step 5: Solve for x
    x = 73,300,896,170.33/308,275.04
  6. Step 6: Final answer
    x = 237,777.59

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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.