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Finding the Fourth Proportional to 290,358.88, 400,400.56 and 273,426.40

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Solution

The fourth proportional to 290,358.88, 400,400.56 and 273,426.40 is: 377,050.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,358.88 : 400,400.56 = 273,426.40 : x
  2. Step 2: Convert to fraction form
    290,358.88/400,400.56 = 273,426.40/x
  3. Step 3: Cross multiply
    290,358.88x = 400,400.56 × 273,426.40
  4. Step 4: Simplify right side
    290,358.88x = 109,480,083,678.78
  5. Step 5: Solve for x
    x = 109,480,083,678.78/290,358.88
  6. Step 6: Final answer
    x = 377,050.92

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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.