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Finding the Fourth Proportional to 387,750.42, 534,450.69 and 266,686.74

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Solution

The fourth proportional to 387,750.42, 534,450.69 and 266,686.74 is: 367,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,750.42 : 534,450.69 = 266,686.74 : x
  2. Step 2: Convert to fraction form
    387,750.42/534,450.69 = 266,686.74/x
  3. Step 3: Cross multiply
    387,750.42x = 534,450.69 × 266,686.74
  4. Step 4: Simplify right side
    387,750.42x = 142,530,912,206.85
  5. Step 5: Solve for x
    x = 142,530,912,206.85/387,750.42
  6. Step 6: Final answer
    x = 367,584.16

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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.