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Finding the Fourth Proportional to 570,129.12, 855,184.72 and 196,155.36

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Solution

The fourth proportional to 570,129.12, 855,184.72 and 196,155.36 is: 294,229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,129.12 : 855,184.72 = 196,155.36 : x
  2. Step 2: Convert to fraction form
    570,129.12/855,184.72 = 196,155.36/x
  3. Step 3: Cross multiply
    570,129.12x = 855,184.72 × 196,155.36
  4. Step 4: Simplify right side
    570,129.12x = 167,749,066,618.10
  5. Step 5: Solve for x
    x = 167,749,066,618.10/570,129.12
  6. Step 6: Final answer
    x = 294,229.96

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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.