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Finding the Fourth Proportional to 358,658.79, 538,112.72 and 159,119.29

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Solution

The fourth proportional to 358,658.79, 538,112.72 and 159,119.29 is: 238,734.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,658.79 : 538,112.72 = 159,119.29 : x
  2. Step 2: Convert to fraction form
    358,658.79/538,112.72 = 159,119.29/x
  3. Step 3: Cross multiply
    358,658.79x = 538,112.72 × 159,119.29
  4. Step 4: Simplify right side
    358,658.79x = 85,624,111,255.81
  5. Step 5: Solve for x
    x = 85,624,111,255.81/358,658.79
  6. Step 6: Final answer
    x = 238,734.18

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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.