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Finding the Fourth Proportional to 205,304.40, 307,519.20 and 165,938.40

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Solution

The fourth proportional to 205,304.40, 307,519.20 and 165,938.40 is: 248,554.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,304.40 : 307,519.20 = 165,938.40 : x
  2. Step 2: Convert to fraction form
    205,304.40/307,519.20 = 165,938.40/x
  3. Step 3: Cross multiply
    205,304.40x = 307,519.20 × 165,938.40
  4. Step 4: Simplify right side
    205,304.40x = 51,029,244,017.28
  5. Step 5: Solve for x
    x = 51,029,244,017.28/205,304.40
  6. Step 6: Final answer
    x = 248,554.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.