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Finding the Fourth Proportional to 311,486.73, 430,016.94 and 249,559.08

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Solution

The fourth proportional to 311,486.73, 430,016.94 and 249,559.08 is: 344,523.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,486.73 : 430,016.94 = 249,559.08 : x
  2. Step 2: Convert to fraction form
    311,486.73/430,016.94 = 249,559.08/x
  3. Step 3: Cross multiply
    311,486.73x = 430,016.94 × 249,559.08
  4. Step 4: Simplify right side
    311,486.73x = 107,314,631,930.82
  5. Step 5: Solve for x
    x = 107,314,631,930.82/311,486.73
  6. Step 6: Final answer
    x = 344,523.93

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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.