Home / 380,365.12-570,554.16-143,819.20

Finding the Fourth Proportional to 380,365.12, 570,554.16 and 143,819.20

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Solution

The fourth proportional to 380,365.12, 570,554.16 and 143,819.20 is: 215,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,365.12 : 570,554.16 = 143,819.20 : x
  2. Step 2: Convert to fraction form
    380,365.12/570,554.16 = 143,819.20/x
  3. Step 3: Cross multiply
    380,365.12x = 570,554.16 × 143,819.20
  4. Step 4: Simplify right side
    380,365.12x = 82,056,642,847.87
  5. Step 5: Solve for x
    x = 82,056,642,847.87/380,365.12
  6. Step 6: Final answer
    x = 215,731.25

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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.