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Finding the Fourth Proportional to 425,907.05, 638,722.27 and 141,521.23

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Solution

The fourth proportional to 425,907.05, 638,722.27 and 141,521.23 is: 212,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,907.05 : 638,722.27 = 141,521.23 : x
  2. Step 2: Convert to fraction form
    425,907.05/638,722.27 = 141,521.23/x
  3. Step 3: Cross multiply
    425,907.05x = 638,722.27 × 141,521.23
  4. Step 4: Simplify right side
    425,907.05x = 90,392,758,860.30
  5. Step 5: Solve for x
    x = 90,392,758,860.30/425,907.05
  6. Step 6: Final answer
    x = 212,235.88

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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.