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Finding the Fourth Proportional to 370,502.91, 556,498.35 and 221,035.23

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Solution

The fourth proportional to 370,502.91, 556,498.35 and 221,035.23 is: 331,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,502.91 : 556,498.35 = 221,035.23 : x
  2. Step 2: Convert to fraction form
    370,502.91/556,498.35 = 221,035.23/x
  3. Step 3: Cross multiply
    370,502.91x = 556,498.35 × 221,035.23
  4. Step 4: Simplify right side
    370,502.91x = 123,005,740,786.87
  5. Step 5: Solve for x
    x = 123,005,740,786.87/370,502.91
  6. Step 6: Final answer
    x = 331,996.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.