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Finding the Fourth Proportional to 239,528.70, 359,311.26 and 139,698.82

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Solution

The fourth proportional to 239,528.70, 359,311.26 and 139,698.82 is: 209,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,528.70 : 359,311.26 = 139,698.82 : x
  2. Step 2: Convert to fraction form
    239,528.70/359,311.26 = 139,698.82/x
  3. Step 3: Cross multiply
    239,528.70x = 359,311.26 × 139,698.82
  4. Step 4: Simplify right side
    239,528.70x = 50,195,359,034.71
  5. Step 5: Solve for x
    x = 50,195,359,034.71/239,528.70
  6. Step 6: Final answer
    x = 209,558.85

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1.5x scale

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.