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Finding the Fourth Proportional to 380,525.76, 570,346.56 and 143,717.76

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Solution

The fourth proportional to 380,525.76, 570,346.56 and 143,717.76 is: 215,409.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,525.76 : 570,346.56 = 143,717.76 : x
  2. Step 2: Convert to fraction form
    380,525.76/570,346.56 = 143,717.76/x
  3. Step 3: Cross multiply
    380,525.76x = 570,346.56 × 143,717.76
  4. Step 4: Simplify right side
    380,525.76x = 81,968,930,026.91
  5. Step 5: Solve for x
    x = 81,968,930,026.91/380,525.76
  6. Step 6: Final answer
    x = 215,409.67

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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.