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Finding the Fourth Proportional to 388,762.29, 536,672.07 and 274,134.33

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Solution

The fourth proportional to 388,762.29, 536,672.07 and 274,134.33 is: 378,432.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,762.29 : 536,672.07 = 274,134.33 : x
  2. Step 2: Convert to fraction form
    388,762.29/536,672.07 = 274,134.33/x
  3. Step 3: Cross multiply
    388,762.29x = 536,672.07 × 274,134.33
  4. Step 4: Simplify right side
    388,762.29x = 147,120,238,339.16
  5. Step 5: Solve for x
    x = 147,120,238,339.16/388,762.29
  6. Step 6: Final answer
    x = 378,432.38

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1.5x scale

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.