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Finding the Fourth Proportional to 571,768.40, 857,659.25 and 172,412.62

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Solution

The fourth proportional to 571,768.40, 857,659.25 and 172,412.62 is: 258,620.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,768.40 : 857,659.25 = 172,412.62 : x
  2. Step 2: Convert to fraction form
    571,768.40/857,659.25 = 172,412.62/x
  3. Step 3: Cross multiply
    571,768.40x = 857,659.25 × 172,412.62
  4. Step 4: Simplify right side
    571,768.40x = 147,871,276,646.62
  5. Step 5: Solve for x
    x = 147,871,276,646.62/571,768.40
  6. Step 6: Final answer
    x = 258,620.93

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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.