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Finding the Fourth Proportional to 239,305.32, 358,873.98 and 70,780.68

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Solution

The fourth proportional to 239,305.32, 358,873.98 and 70,780.68 is: 106,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,305.32 : 358,873.98 = 70,780.68 : x
  2. Step 2: Convert to fraction form
    239,305.32/358,873.98 = 70,780.68/x
  3. Step 3: Cross multiply
    239,305.32x = 358,873.98 × 70,780.68
  4. Step 4: Simplify right side
    239,305.32x = 25,401,344,338.71
  5. Step 5: Solve for x
    x = 25,401,344,338.71/239,305.32
  6. Step 6: Final answer
    x = 106,146.17

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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.