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Finding the Fourth Proportional to 242,988.66, 364,486.23 and 85,221.72

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Solution

The fourth proportional to 242,988.66, 364,486.23 and 85,221.72 is: 127,833.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,988.66 : 364,486.23 = 85,221.72 : x
  2. Step 2: Convert to fraction form
    242,988.66/364,486.23 = 85,221.72/x
  3. Step 3: Cross multiply
    242,988.66x = 364,486.23 × 85,221.72
  4. Step 4: Simplify right side
    242,988.66x = 31,062,143,436.92
  5. Step 5: Solve for x
    x = 31,062,143,436.92/242,988.66
  6. Step 6: Final answer
    x = 127,833.72

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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.