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Finding the Fourth Proportional to 242,695.80, 364,043.70 and 217,326.60

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Solution

The fourth proportional to 242,695.80, 364,043.70 and 217,326.60 is: 325,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,695.80 : 364,043.70 = 217,326.60 : x
  2. Step 2: Convert to fraction form
    242,695.80/364,043.70 = 217,326.60/x
  3. Step 3: Cross multiply
    242,695.80x = 364,043.70 × 217,326.60
  4. Step 4: Simplify right side
    242,695.80x = 79,116,379,572.42
  5. Step 5: Solve for x
    x = 79,116,379,572.42/242,695.80
  6. Step 6: Final answer
    x = 325,989.90

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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.