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Finding the Fourth Proportional to 239,658.78, 359,575.66 and 139,800.36

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Solution

The fourth proportional to 239,658.78, 359,575.66 and 139,800.36 is: 209,751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,658.78 : 359,575.66 = 139,800.36 : x
  2. Step 2: Convert to fraction form
    239,658.78/359,575.66 = 139,800.36/x
  3. Step 3: Cross multiply
    239,658.78x = 359,575.66 × 139,800.36
  4. Step 4: Simplify right side
    239,658.78x = 50,268,806,715.24
  5. Step 5: Solve for x
    x = 50,268,806,715.24/239,658.78
  6. Step 6: Final answer
    x = 209,751.58

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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.