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Finding the Fourth Proportional to 219,207.60, 328,811.40 and 171,968.40

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Solution

The fourth proportional to 219,207.60, 328,811.40 and 171,968.40 is: 257,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,207.60 : 328,811.40 = 171,968.40 : x
  2. Step 2: Convert to fraction form
    219,207.60/328,811.40 = 171,968.40/x
  3. Step 3: Cross multiply
    219,207.60x = 328,811.40 × 171,968.40
  4. Step 4: Simplify right side
    219,207.60x = 56,545,170,359.76
  5. Step 5: Solve for x
    x = 56,545,170,359.76/219,207.60
  6. Step 6: Final answer
    x = 257,952.60

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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.