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Finding the Fourth Proportional to 219,221.60, 328,832.40 and 171,982.40

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Solution

The fourth proportional to 219,221.60, 328,832.40 and 171,982.40 is: 257,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,221.60 : 328,832.40 = 171,982.40 : x
  2. Step 2: Convert to fraction form
    219,221.60/328,832.40 = 171,982.40/x
  3. Step 3: Cross multiply
    219,221.60x = 328,832.40 × 171,982.40
  4. Step 4: Simplify right side
    219,221.60x = 56,553,385,349.76
  5. Step 5: Solve for x
    x = 56,553,385,349.76/219,221.60
  6. Step 6: Final answer
    x = 257,973.60

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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.