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Finding the Fourth Proportional to 571,434.12, 857,318.46 and 255,820.68

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Solution

The fourth proportional to 571,434.12, 857,318.46 and 255,820.68 is: 383,805.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,434.12 : 857,318.46 = 255,820.68 : x
  2. Step 2: Convert to fraction form
    571,434.12/857,318.46 = 255,820.68/x
  3. Step 3: Cross multiply
    571,434.12x = 857,318.46 × 255,820.68
  4. Step 4: Simplify right side
    571,434.12x = 219,319,791,413.75
  5. Step 5: Solve for x
    x = 219,319,791,413.75/571,434.12
  6. Step 6: Final answer
    x = 383,805.91

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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.