Home / 380,986.12-571,479.18-156,308.32

Finding the Fourth Proportional to 380,986.12, 571,479.18 and 156,308.32

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Solution

The fourth proportional to 380,986.12, 571,479.18 and 156,308.32 is: 234,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,986.12 : 571,479.18 = 156,308.32 : x
  2. Step 2: Convert to fraction form
    380,986.12/571,479.18 = 156,308.32/x
  3. Step 3: Cross multiply
    380,986.12x = 571,479.18 × 156,308.32
  4. Step 4: Simplify right side
    380,986.12x = 89,326,950,540.78
  5. Step 5: Solve for x
    x = 89,326,950,540.78/380,986.12
  6. Step 6: Final answer
    x = 234,462.48

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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.