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Finding the Fourth Proportional to 242,805.20, 364,207.80 and 221,032.40

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Solution

The fourth proportional to 242,805.20, 364,207.80 and 221,032.40 is: 331,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,805.20 : 364,207.80 = 221,032.40 : x
  2. Step 2: Convert to fraction form
    242,805.20/364,207.80 = 221,032.40/x
  3. Step 3: Cross multiply
    242,805.20x = 364,207.80 × 221,032.40
  4. Step 4: Simplify right side
    242,805.20x = 80,501,724,132.72
  5. Step 5: Solve for x
    x = 80,501,724,132.72/242,805.20
  6. Step 6: Final answer
    x = 331,548.60

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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.