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Finding the Fourth Proportional to 571,661.55, 857,532.42 and 172,305.63

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Solution

The fourth proportional to 571,661.55, 857,532.42 and 172,305.63 is: 258,470.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,661.55 : 857,532.42 = 172,305.63 : x
  2. Step 2: Convert to fraction form
    571,661.55/857,532.42 = 172,305.63/x
  3. Step 3: Cross multiply
    571,661.55x = 857,532.42 × 172,305.63
  4. Step 4: Simplify right side
    571,661.55x = 147,757,663,873.53
  5. Step 5: Solve for x
    x = 147,757,663,873.53/571,661.55
  6. Step 6: Final answer
    x = 258,470.53

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1.5x scale

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.