Home / 218,930.51-328,440.08-92,570.55

Finding the Fourth Proportional to 218,930.51, 328,440.08 and 92,570.55

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Solution

The fourth proportional to 218,930.51, 328,440.08 and 92,570.55 is: 138,874.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,930.51 : 328,440.08 = 92,570.55 : x
  2. Step 2: Convert to fraction form
    218,930.51/328,440.08 = 92,570.55/x
  3. Step 3: Cross multiply
    218,930.51x = 328,440.08 × 92,570.55
  4. Step 4: Simplify right side
    218,930.51x = 30,403,878,384.79
  5. Step 5: Solve for x
    x = 30,403,878,384.79/218,930.51
  6. Step 6: Final answer
    x = 138,874.56

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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.