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Finding the Fourth Proportional to 431,650.91, 595,409.18 and 278,630.16

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Solution

The fourth proportional to 431,650.91, 595,409.18 and 278,630.16 is: 384,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,650.91 : 595,409.18 = 278,630.16 : x
  2. Step 2: Convert to fraction form
    431,650.91/595,409.18 = 278,630.16/x
  3. Step 3: Cross multiply
    431,650.91x = 595,409.18 × 278,630.16
  4. Step 4: Simplify right side
    431,650.91x = 165,898,953,695.72
  5. Step 5: Solve for x
    x = 165,898,953,695.72/431,650.91
  6. Step 6: Final answer
    x = 384,335.93

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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.