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Finding the Fourth Proportional to 218,675.60, 328,013.40 and 191,027.60

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Solution

The fourth proportional to 218,675.60, 328,013.40 and 191,027.60 is: 286,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,675.60 : 328,013.40 = 191,027.60 : x
  2. Step 2: Convert to fraction form
    218,675.60/328,013.40 = 191,027.60/x
  3. Step 3: Cross multiply
    218,675.60x = 328,013.40 × 191,027.60
  4. Step 4: Simplify right side
    218,675.60x = 62,659,612,569.84
  5. Step 5: Solve for x
    x = 62,659,612,569.84/218,675.60
  6. Step 6: Final answer
    x = 286,541.40

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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.