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Finding the Fourth Proportional to 228,430.86, 315,238.31 and 125,063.32

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Solution

The fourth proportional to 228,430.86, 315,238.31 and 125,063.32 is: 172,589.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,430.86 : 315,238.31 = 125,063.32 : x
  2. Step 2: Convert to fraction form
    228,430.86/315,238.31 = 125,063.32/x
  3. Step 3: Cross multiply
    228,430.86x = 315,238.31 × 125,063.32
  4. Step 4: Simplify right side
    228,430.86x = 39,424,749,639.79
  5. Step 5: Solve for x
    x = 39,424,749,639.79/228,430.86
  6. Step 6: Final answer
    x = 172,589.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.