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Finding the Fourth Proportional to 321,907.30, 482,860.95 and 156,019.30

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Solution

The fourth proportional to 321,907.30, 482,860.95 and 156,019.30 is: 234,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,907.30 : 482,860.95 = 156,019.30 : x
  2. Step 2: Convert to fraction form
    321,907.30/482,860.95 = 156,019.30/x
  3. Step 3: Cross multiply
    321,907.30x = 482,860.95 × 156,019.30
  4. Step 4: Simplify right side
    321,907.30x = 75,335,627,416.34
  5. Step 5: Solve for x
    x = 75,335,627,416.34/321,907.30
  6. Step 6: Final answer
    x = 234,028.95

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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.