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Finding the Fourth Proportional to 571,691.85, 857,259.93 and 172,258.17

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Solution

The fourth proportional to 571,691.85, 857,259.93 and 172,258.17 is: 258,303.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,691.85 : 857,259.93 = 172,258.17 : x
  2. Step 2: Convert to fraction form
    571,691.85/857,259.93 = 172,258.17/x
  3. Step 3: Cross multiply
    571,691.85x = 857,259.93 × 172,258.17
  4. Step 4: Simplify right side
    571,691.85x = 147,670,026,756.13
  5. Step 5: Solve for x
    x = 147,670,026,756.13/571,691.85
  6. Step 6: Final answer
    x = 258,303.54

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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.