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Finding the Fourth Proportional to 228,564.67, 315,421.56 and 137,903.11

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Solution

The fourth proportional to 228,564.67, 315,421.56 and 137,903.11 is: 190,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,564.67 : 315,421.56 = 137,903.11 : x
  2. Step 2: Convert to fraction form
    228,564.67/315,421.56 = 137,903.11/x
  3. Step 3: Cross multiply
    228,564.67x = 315,421.56 × 137,903.11
  4. Step 4: Simplify right side
    228,564.67x = 43,497,613,296.50
  5. Step 5: Solve for x
    x = 43,497,613,296.50/228,564.67
  6. Step 6: Final answer
    x = 190,307.69

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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.