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Finding the Fourth Proportional to 571,697.85, 857,268.93 and 172,264.17

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Solution

The fourth proportional to 571,697.85, 857,268.93 and 172,264.17 is: 258,312.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,697.85 : 857,268.93 = 172,264.17 : x
  2. Step 2: Convert to fraction form
    571,697.85/857,268.93 = 172,264.17/x
  3. Step 3: Cross multiply
    571,697.85x = 857,268.93 × 172,264.17
  4. Step 4: Simplify right side
    571,697.85x = 147,676,720,693.24
  5. Step 5: Solve for x
    x = 147,676,720,693.24/571,697.85
  6. Step 6: Final answer
    x = 258,312.53

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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.