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Finding the Fourth Proportional to 425,326.77, 638,077.64 and 292,269.69

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Solution

The fourth proportional to 425,326.77, 638,077.64 and 292,269.69 is: 438,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,326.77 : 638,077.64 = 292,269.69 : x
  2. Step 2: Convert to fraction form
    425,326.77/638,077.64 = 292,269.69/x
  3. Step 3: Cross multiply
    425,326.77x = 638,077.64 × 292,269.69
  4. Step 4: Simplify right side
    425,326.77x = 186,490,752,577.38
  5. Step 5: Solve for x
    x = 186,490,752,577.38/425,326.77
  6. Step 6: Final answer
    x = 438,464.65

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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.