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Finding the Fourth Proportional to 571,126.65, 855,788.72 and 210,801.56

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Solution

The fourth proportional to 571,126.65, 855,788.72 and 210,801.56 is: 315,869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,126.65 : 855,788.72 = 210,801.56 : x
  2. Step 2: Convert to fraction form
    571,126.65/855,788.72 = 210,801.56/x
  3. Step 3: Cross multiply
    571,126.65x = 855,788.72 × 210,801.56
  4. Step 4: Simplify right side
    571,126.65x = 180,401,591,873.45
  5. Step 5: Solve for x
    x = 180,401,591,873.45/571,126.65
  6. Step 6: Final answer
    x = 315,869.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.