Home / 379,899.36-569,849.85-261,211.68

Finding the Fourth Proportional to 379,899.36, 569,849.85 and 261,211.68

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Solution

The fourth proportional to 379,899.36, 569,849.85 and 261,211.68 is: 391,818.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,899.36 : 569,849.85 = 261,211.68 : x
  2. Step 2: Convert to fraction form
    379,899.36/569,849.85 = 261,211.68/x
  3. Step 3: Cross multiply
    379,899.36x = 569,849.85 × 261,211.68
  4. Step 4: Simplify right side
    379,899.36x = 148,851,436,666.25
  5. Step 5: Solve for x
    x = 148,851,436,666.25/379,899.36
  6. Step 6: Final answer
    x = 391,818.08

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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.