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Finding the Fourth Proportional to 316,073.97, 436,146.26 and 187,016.40

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Solution

The fourth proportional to 316,073.97, 436,146.26 and 187,016.40 is: 258,061.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,073.97 : 436,146.26 = 187,016.40 : x
  2. Step 2: Convert to fraction form
    316,073.97/436,146.26 = 187,016.40/x
  3. Step 3: Cross multiply
    316,073.97x = 436,146.26 × 187,016.40
  4. Step 4: Simplify right side
    316,073.97x = 81,566,502,483.58
  5. Step 5: Solve for x
    x = 81,566,502,483.58/316,073.97
  6. Step 6: Final answer
    x = 258,061.44

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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.