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Finding the Fourth Proportional to 381,348.28, 526,130.28 and 217,887.50

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Solution

The fourth proportional to 381,348.28, 526,130.28 and 217,887.50 is: 300,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,348.28 : 526,130.28 = 217,887.50 : x
  2. Step 2: Convert to fraction form
    381,348.28/526,130.28 = 217,887.50/x
  3. Step 3: Cross multiply
    381,348.28x = 526,130.28 × 217,887.50
  4. Step 4: Simplify right side
    381,348.28x = 114,637,211,383.50
  5. Step 5: Solve for x
    x = 114,637,211,383.50/381,348.28
  6. Step 6: Final answer
    x = 300,610.28

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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.