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Finding the Fourth Proportional to 571,012.18, 856,452 and 150,320.86

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Solution

The fourth proportional to 571,012.18, 856,452 and 150,320.86 is: 225,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,012.18 : 856,452 = 150,320.86 : x
  2. Step 2: Convert to fraction form
    571,012.18/856,452 = 150,320.86/x
  3. Step 3: Cross multiply
    571,012.18x = 856,452 × 150,320.86
  4. Step 4: Simplify right side
    571,012.18x = 128,742,601,188.72
  5. Step 5: Solve for x
    x = 128,742,601,188.72/571,012.18
  6. Step 6: Final answer
    x = 225,463.84

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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.