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Finding the Fourth Proportional to 265,667.04, 398,422.80 and 218,803.68

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Solution

The fourth proportional to 265,667.04, 398,422.80 and 218,803.68 is: 328,141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,667.04 : 398,422.80 = 218,803.68 : x
  2. Step 2: Convert to fraction form
    265,667.04/398,422.80 = 218,803.68/x
  3. Step 3: Cross multiply
    265,667.04x = 398,422.80 × 218,803.68
  4. Step 4: Simplify right side
    265,667.04x = 87,176,374,835.90
  5. Step 5: Solve for x
    x = 87,176,374,835.90/265,667.04
  6. Step 6: Final answer
    x = 328,141.48

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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.