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Finding the Fourth Proportional to 228,322.09, 315,211.17 and 137,701.11

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Solution

The fourth proportional to 228,322.09, 315,211.17 and 137,701.11 is: 190,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,322.09 : 315,211.17 = 137,701.11 : x
  2. Step 2: Convert to fraction form
    228,322.09/315,211.17 = 137,701.11/x
  3. Step 3: Cross multiply
    228,322.09x = 315,211.17 × 137,701.11
  4. Step 4: Simplify right side
    228,322.09x = 43,404,926,417.34
  5. Step 5: Solve for x
    x = 43,404,926,417.34/228,322.09
  6. Step 6: Final answer
    x = 190,103.93

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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.