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Finding the Fourth Proportional to 570,390.78, 855,560.22 and 191,282.34

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Solution

The fourth proportional to 570,390.78, 855,560.22 and 191,282.34 is: 286,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,390.78 : 855,560.22 = 191,282.34 : x
  2. Step 2: Convert to fraction form
    570,390.78/855,560.22 = 191,282.34/x
  3. Step 3: Cross multiply
    570,390.78x = 855,560.22 × 191,282.34
  4. Step 4: Simplify right side
    570,390.78x = 163,653,560,892.52
  5. Step 5: Solve for x
    x = 163,653,560,892.52/570,390.78
  6. Step 6: Final answer
    x = 286,914.81

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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.