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Finding the Fourth Proportional to 425,709.18, 587,581.02 and 255,910.50

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Solution

The fourth proportional to 425,709.18, 587,581.02 and 255,910.50 is: 353,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,709.18 : 587,581.02 = 255,910.50 : x
  2. Step 2: Convert to fraction form
    425,709.18/587,581.02 = 255,910.50/x
  3. Step 3: Cross multiply
    425,709.18x = 587,581.02 × 255,910.50
  4. Step 4: Simplify right side
    425,709.18x = 150,368,152,618.71
  5. Step 5: Solve for x
    x = 150,368,152,618.71/425,709.18
  6. Step 6: Final answer
    x = 353,218.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.