Home / 218,925.24-328,307.22-78,646.20

Finding the Fourth Proportional to 218,925.24, 328,307.22 and 78,646.20

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Solution

The fourth proportional to 218,925.24, 328,307.22 and 78,646.20 is: 117,940.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,925.24 : 328,307.22 = 78,646.20 : x
  2. Step 2: Convert to fraction form
    218,925.24/328,307.22 = 78,646.20/x
  3. Step 3: Cross multiply
    218,925.24x = 328,307.22 × 78,646.20
  4. Step 4: Simplify right side
    218,925.24x = 25,820,115,285.56
  5. Step 5: Solve for x
    x = 25,820,115,285.56/218,925.24
  6. Step 6: Final answer
    x = 117,940.33

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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.