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Finding the Fourth Proportional to 228,790.57, 315,730.44 and 125,424.58

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Solution

The fourth proportional to 228,790.57, 315,730.44 and 125,424.58 is: 173,085.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,790.57 : 315,730.44 = 125,424.58 : x
  2. Step 2: Convert to fraction form
    228,790.57/315,730.44 = 125,424.58/x
  3. Step 3: Cross multiply
    228,790.57x = 315,730.44 × 125,424.58
  4. Step 4: Simplify right side
    228,790.57x = 39,600,357,830.22
  5. Step 5: Solve for x
    x = 39,600,357,830.22/228,790.57
  6. Step 6: Final answer
    x = 173,085.62

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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.