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Finding the Fourth Proportional to 269,312.20, 403,968.30 and 79,779.40

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Solution

The fourth proportional to 269,312.20, 403,968.30 and 79,779.40 is: 119,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,312.20 : 403,968.30 = 79,779.40 : x
  2. Step 2: Convert to fraction form
    269,312.20/403,968.30 = 79,779.40/x
  3. Step 3: Cross multiply
    269,312.20x = 403,968.30 × 79,779.40
  4. Step 4: Simplify right side
    269,312.20x = 32,228,348,593.02
  5. Step 5: Solve for x
    x = 32,228,348,593.02/269,312.20
  6. Step 6: Final answer
    x = 119,669.10

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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.