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Finding the Fourth Proportional to 316,394.17, 436,422.40 and 220,866.01

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Solution

The fourth proportional to 316,394.17, 436,422.40 and 220,866.01 is: 304,654.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,394.17 : 436,422.40 = 220,866.01 : x
  2. Step 2: Convert to fraction form
    316,394.17/436,422.40 = 220,866.01/x
  3. Step 3: Cross multiply
    316,394.17x = 436,422.40 × 220,866.01
  4. Step 4: Simplify right side
    316,394.17x = 96,390,874,162.62
  5. Step 5: Solve for x
    x = 96,390,874,162.62/316,394.17
  6. Step 6: Final answer
    x = 304,654.39

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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.