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Finding the Fourth Proportional to 218,950.40, 328,425.60 and 100,852.40

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Solution

The fourth proportional to 218,950.40, 328,425.60 and 100,852.40 is: 151,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,950.40 : 328,425.60 = 100,852.40 : x
  2. Step 2: Convert to fraction form
    218,950.40/328,425.60 = 100,852.40/x
  3. Step 3: Cross multiply
    218,950.40x = 328,425.60 × 100,852.40
  4. Step 4: Simplify right side
    218,950.40x = 33,122,509,981.44
  5. Step 5: Solve for x
    x = 33,122,509,981.44/218,950.40
  6. Step 6: Final answer
    x = 151,278.60

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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.