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Finding the Fourth Proportional to 238,889.46, 358,387.47 and 72,690.42

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Solution

The fourth proportional to 238,889.46, 358,387.47 and 72,690.42 is: 109,051.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,889.46 : 358,387.47 = 72,690.42 : x
  2. Step 2: Convert to fraction form
    238,889.46/358,387.47 = 72,690.42/x
  3. Step 3: Cross multiply
    238,889.46x = 358,387.47 × 72,690.42
  4. Step 4: Simplify right side
    238,889.46x = 26,051,335,717.04
  5. Step 5: Solve for x
    x = 26,051,335,717.04/238,889.46
  6. Step 6: Final answer
    x = 109,051.84

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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.