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Finding the Fourth Proportional to 316,074.97, 436,147.63 and 187,017.40

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Solution

The fourth proportional to 316,074.97, 436,147.63 and 187,017.40 is: 258,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,074.97 : 436,147.63 = 187,017.40 : x
  2. Step 2: Convert to fraction form
    316,074.97/436,147.63 = 187,017.40/x
  3. Step 3: Cross multiply
    316,074.97x = 436,147.63 × 187,017.40
  4. Step 4: Simplify right side
    316,074.97x = 81,567,195,778.76
  5. Step 5: Solve for x
    x = 81,567,195,778.76/316,074.97
  6. Step 6: Final answer
    x = 258,062.81

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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.