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Finding the Fourth Proportional to 313,648.86, 432,043.95 and 253,049.92

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Solution

The fourth proportional to 313,648.86, 432,043.95 and 253,049.92 is: 348,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,648.86 : 432,043.95 = 253,049.92 : x
  2. Step 2: Convert to fraction form
    313,648.86/432,043.95 = 253,049.92/x
  3. Step 3: Cross multiply
    313,648.86x = 432,043.95 × 253,049.92
  4. Step 4: Simplify right side
    313,648.86x = 109,328,686,983.98
  5. Step 5: Solve for x
    x = 109,328,686,983.98/313,648.86
  6. Step 6: Final answer
    x = 348,570.33

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1.5x scale

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.