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Finding the Fourth Proportional to 243,036.30, 364,554.45 and 85,207.80

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Solution

The fourth proportional to 243,036.30, 364,554.45 and 85,207.80 is: 127,811.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,036.30 : 364,554.45 = 85,207.80 : x
  2. Step 2: Convert to fraction form
    243,036.30/364,554.45 = 85,207.80/x
  3. Step 3: Cross multiply
    243,036.30x = 364,554.45 × 85,207.80
  4. Step 4: Simplify right side
    243,036.30x = 31,062,882,664.71
  5. Step 5: Solve for x
    x = 31,062,882,664.71/243,036.30
  6. Step 6: Final answer
    x = 127,811.70

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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.