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Finding the Fourth Proportional to 571,062.75, 856,607.90 and 191,988.42

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Solution

The fourth proportional to 571,062.75, 856,607.90 and 191,988.42 is: 287,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,062.75 : 856,607.90 = 191,988.42 : x
  2. Step 2: Convert to fraction form
    571,062.75/856,607.90 = 191,988.42/x
  3. Step 3: Cross multiply
    571,062.75x = 856,607.90 × 191,988.42
  4. Step 4: Simplify right side
    571,062.75x = 164,458,796,320.58
  5. Step 5: Solve for x
    x = 164,458,796,320.58/571,062.75
  6. Step 6: Final answer
    x = 287,987.26

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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.