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Finding the Fourth Proportional to 425,417.32, 638,273.58 and 188,926.12

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Solution

The fourth proportional to 425,417.32, 638,273.58 and 188,926.12 is: 283,454.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,417.32 : 638,273.58 = 188,926.12 : x
  2. Step 2: Convert to fraction form
    425,417.32/638,273.58 = 188,926.12/x
  3. Step 3: Cross multiply
    425,417.32x = 638,273.58 × 188,926.12
  4. Step 4: Simplify right side
    425,417.32x = 120,586,550,967.91
  5. Step 5: Solve for x
    x = 120,586,550,967.91/425,417.32
  6. Step 6: Final answer
    x = 283,454.73

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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.