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Finding the Fourth Proportional to 372,475, 513,925.86 and 219,519.28

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Solution

The fourth proportional to 372,475, 513,925.86 and 219,519.28 is: 302,883.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,475 : 513,925.86 = 219,519.28 : x
  2. Step 2: Convert to fraction form
    372,475/513,925.86 = 219,519.28/x
  3. Step 3: Cross multiply
    372,475x = 513,925.86 × 219,519.28
  4. Step 4: Simplify right side
    372,475x = 112,816,634,760.58
  5. Step 5: Solve for x
    x = 112,816,634,760.58/372,475
  6. Step 6: Final answer
    x = 302,883.78

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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.