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Finding the Fourth Proportional to 238,661.12, 329,402.46 and 151,389.77

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Solution

The fourth proportional to 238,661.12, 329,402.46 and 151,389.77 is: 208,949.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,661.12 : 329,402.46 = 151,389.77 : x
  2. Step 2: Convert to fraction form
    238,661.12/329,402.46 = 151,389.77/x
  3. Step 3: Cross multiply
    238,661.12x = 329,402.46 × 151,389.77
  4. Step 4: Simplify right side
    238,661.12x = 49,868,162,656.83
  5. Step 5: Solve for x
    x = 49,868,162,656.83/238,661.12
  6. Step 6: Final answer
    x = 208,949.67

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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.