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Finding the Fourth Proportional to 228,542.76, 315,417.06 and 137,950.74

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Solution

The fourth proportional to 228,542.76, 315,417.06 and 137,950.74 is: 190,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,542.76 : 315,417.06 = 137,950.74 : x
  2. Step 2: Convert to fraction form
    228,542.76/315,417.06 = 137,950.74/x
  3. Step 3: Cross multiply
    228,542.76x = 315,417.06 × 137,950.74
  4. Step 4: Simplify right side
    228,542.76x = 43,512,016,835.62
  5. Step 5: Solve for x
    x = 43,512,016,835.62/228,542.76
  6. Step 6: Final answer
    x = 190,388.95

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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.