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Finding the Fourth Proportional to 425,925, 638,700.39 and 159,498.65

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Solution

The fourth proportional to 425,925, 638,700.39 and 159,498.65 is: 239,177.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,925 : 638,700.39 = 159,498.65 : x
  2. Step 2: Convert to fraction form
    425,925/638,700.39 = 159,498.65/x
  3. Step 3: Cross multiply
    425,925x = 638,700.39 × 159,498.65
  4. Step 4: Simplify right side
    425,925x = 101,871,851,556.22
  5. Step 5: Solve for x
    x = 101,871,851,556.22/425,925
  6. Step 6: Final answer
    x = 239,177.91

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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.