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Finding the Fourth Proportional to 425,799.69, 638,699.63 and 173,217.59

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Solution

The fourth proportional to 425,799.69, 638,699.63 and 173,217.59 is: 259,826.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,799.69 : 638,699.63 = 173,217.59 : x
  2. Step 2: Convert to fraction form
    425,799.69/638,699.63 = 173,217.59/x
  3. Step 3: Cross multiply
    425,799.69x = 638,699.63 × 173,217.59
  4. Step 4: Simplify right side
    425,799.69x = 110,634,011,075.54
  5. Step 5: Solve for x
    x = 110,634,011,075.54/425,799.69
  6. Step 6: Final answer
    x = 259,826.43

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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.