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Finding the Fourth Proportional to 331,663.50, 457,708 and 188,447.80

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Solution

The fourth proportional to 331,663.50, 457,708 and 188,447.80 is: 260,064.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,663.50 : 457,708 = 188,447.80 : x
  2. Step 2: Convert to fraction form
    331,663.50/457,708 = 188,447.80/x
  3. Step 3: Cross multiply
    331,663.50x = 457,708 × 188,447.80
  4. Step 4: Simplify right side
    331,663.50x = 86,254,065,642.40
  5. Step 5: Solve for x
    x = 86,254,065,642.40/331,663.50
  6. Step 6: Final answer
    x = 260,064.99

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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.