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Finding the Fourth Proportional to 571,428.90, 857,221.83 and 192,379.14

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Solution

The fourth proportional to 571,428.90, 857,221.83 and 192,379.14 is: 288,595.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,428.90 : 857,221.83 = 192,379.14 : x
  2. Step 2: Convert to fraction form
    571,428.90/857,221.83 = 192,379.14/x
  3. Step 3: Cross multiply
    571,428.90x = 857,221.83 × 192,379.14
  4. Step 4: Simplify right side
    571,428.90x = 164,911,598,444.63
  5. Step 5: Solve for x
    x = 164,911,598,444.63/571,428.90
  6. Step 6: Final answer
    x = 288,595.13

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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.