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Finding the Fourth Proportional to 372,248.60, 513,660.30 and 211,071.56

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Solution

The fourth proportional to 372,248.60, 513,660.30 and 211,071.56 is: 291,254.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,248.60 : 513,660.30 = 211,071.56 : x
  2. Step 2: Convert to fraction form
    372,248.60/513,660.30 = 211,071.56/x
  3. Step 3: Cross multiply
    372,248.60x = 513,660.30 × 211,071.56
  4. Step 4: Simplify right side
    372,248.60x = 108,419,080,831.07
  5. Step 5: Solve for x
    x = 108,419,080,831.07/372,248.60
  6. Step 6: Final answer
    x = 291,254.50

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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.