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Finding the Fourth Proportional to 378,209.44, 521,763.69 and 270,740.26

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Solution

The fourth proportional to 378,209.44, 521,763.69 and 270,740.26 is: 373,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,209.44 : 521,763.69 = 270,740.26 : x
  2. Step 2: Convert to fraction form
    378,209.44/521,763.69 = 270,740.26/x
  3. Step 3: Cross multiply
    378,209.44x = 521,763.69 × 270,740.26
  4. Step 4: Simplify right side
    378,209.44x = 141,262,437,089.16
  5. Step 5: Solve for x
    x = 141,262,437,089.16/378,209.44
  6. Step 6: Final answer
    x = 373,503.20

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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.