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Finding the Fourth Proportional to 422,554.12, 583,139.63 and 231,567.54

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Solution

The fourth proportional to 422,554.12, 583,139.63 and 231,567.54 is: 319,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,554.12 : 583,139.63 = 231,567.54 : x
  2. Step 2: Convert to fraction form
    422,554.12/583,139.63 = 231,567.54/x
  3. Step 3: Cross multiply
    422,554.12x = 583,139.63 × 231,567.54
  4. Step 4: Simplify right side
    422,554.12x = 135,036,209,595.61
  5. Step 5: Solve for x
    x = 135,036,209,595.61/422,554.12
  6. Step 6: Final answer
    x = 319,571.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.