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Finding the Fourth Proportional to 239,041.40, 358,601.05 and 70,578.76

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Solution

The fourth proportional to 239,041.40, 358,601.05 and 70,578.76 is: 105,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,041.40 : 358,601.05 = 70,578.76 : x
  2. Step 2: Convert to fraction form
    239,041.40/358,601.05 = 70,578.76/x
  3. Step 3: Cross multiply
    239,041.40x = 358,601.05 × 70,578.76
  4. Step 4: Simplify right side
    239,041.40x = 25,309,616,048.72
  5. Step 5: Solve for x
    x = 25,309,616,048.72/239,041.40
  6. Step 6: Final answer
    x = 105,879.63

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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.