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Finding the Fourth Proportional to 347,503.12, 479,833.29 and 279,301.52

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Solution

The fourth proportional to 347,503.12, 479,833.29 and 279,301.52 is: 385,660.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,503.12 : 479,833.29 = 279,301.52 : x
  2. Step 2: Convert to fraction form
    347,503.12/479,833.29 = 279,301.52/x
  3. Step 3: Cross multiply
    347,503.12x = 479,833.29 × 279,301.52
  4. Step 4: Simplify right side
    347,503.12x = 134,018,168,443.18
  5. Step 5: Solve for x
    x = 134,018,168,443.18/347,503.12
  6. Step 6: Final answer
    x = 385,660.33

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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.