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Finding the Fourth Proportional to 425,695.02, 638,111.34 and 276,030.24

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Solution

The fourth proportional to 425,695.02, 638,111.34 and 276,030.24 is: 413,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,695.02 : 638,111.34 = 276,030.24 : x
  2. Step 2: Convert to fraction form
    425,695.02/638,111.34 = 276,030.24/x
  3. Step 3: Cross multiply
    425,695.02x = 638,111.34 × 276,030.24
  4. Step 4: Simplify right side
    425,695.02x = 176,138,026,326.92
  5. Step 5: Solve for x
    x = 176,138,026,326.92/425,695.02
  6. Step 6: Final answer
    x = 413,765.77

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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.