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Finding the Fourth Proportional to 316,238.04, 436,413.78 and 172,999.08

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Solution

The fourth proportional to 316,238.04, 436,413.78 and 172,999.08 is: 238,741.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,238.04 : 436,413.78 = 172,999.08 : x
  2. Step 2: Convert to fraction form
    316,238.04/436,413.78 = 172,999.08/x
  3. Step 3: Cross multiply
    316,238.04x = 436,413.78 × 172,999.08
  4. Step 4: Simplify right side
    316,238.04x = 75,499,182,439.32
  5. Step 5: Solve for x
    x = 75,499,182,439.32/316,238.04
  6. Step 6: Final answer
    x = 238,741.62

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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.