Home / 378,155.57-521,955.45-223,243.07

Finding the Fourth Proportional to 378,155.57, 521,955.45 and 223,243.07

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Solution

The fourth proportional to 378,155.57, 521,955.45 and 223,243.07 is: 308,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,155.57 : 521,955.45 = 223,243.07 : x
  2. Step 2: Convert to fraction form
    378,155.57/521,955.45 = 223,243.07/x
  3. Step 3: Cross multiply
    378,155.57x = 521,955.45 × 223,243.07
  4. Step 4: Simplify right side
    378,155.57x = 116,522,934,451.45
  5. Step 5: Solve for x
    x = 116,522,934,451.45/378,155.57
  6. Step 6: Final answer
    x = 308,134.92

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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.