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Finding the Fourth Proportional to 218,818.98, 328,228.47 and 69,070.95

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Solution

The fourth proportional to 218,818.98, 328,228.47 and 69,070.95 is: 103,606.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,818.98 : 328,228.47 = 69,070.95 : x
  2. Step 2: Convert to fraction form
    218,818.98/328,228.47 = 69,070.95/x
  3. Step 3: Cross multiply
    218,818.98x = 328,228.47 × 69,070.95
  4. Step 4: Simplify right side
    218,818.98x = 22,671,052,239.95
  5. Step 5: Solve for x
    x = 22,671,052,239.95/218,818.98
  6. Step 6: Final answer
    x = 103,606.43

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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.