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Finding the Fourth Proportional to 269,779.40, 404,669.10 and 143,808.20

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Solution

The fourth proportional to 269,779.40, 404,669.10 and 143,808.20 is: 215,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,779.40 : 404,669.10 = 143,808.20 : x
  2. Step 2: Convert to fraction form
    269,779.40/404,669.10 = 143,808.20/x
  3. Step 3: Cross multiply
    269,779.40x = 404,669.10 × 143,808.20
  4. Step 4: Simplify right side
    269,779.40x = 58,194,734,866.62
  5. Step 5: Solve for x
    x = 58,194,734,866.62/269,779.40
  6. Step 6: Final answer
    x = 215,712.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.