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Finding the Fourth Proportional to 339,813.70, 469,014.25 and 215,554.30

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Solution

The fourth proportional to 339,813.70, 469,014.25 and 215,554.30 is: 297,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,813.70 : 469,014.25 = 215,554.30 : x
  2. Step 2: Convert to fraction form
    339,813.70/469,014.25 = 215,554.30/x
  3. Step 3: Cross multiply
    339,813.70x = 469,014.25 × 215,554.30
  4. Step 4: Simplify right side
    339,813.70x = 101,098,034,925.93
  5. Step 5: Solve for x
    x = 101,098,034,925.93/339,813.70
  6. Step 6: Final answer
    x = 297,510.18

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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.