Home / 379,279.04-569,143-139,561.27

Finding the Fourth Proportional to 379,279.04, 569,143 and 139,561.27

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Solution

The fourth proportional to 379,279.04, 569,143 and 139,561.27 is: 209,424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,279.04 : 569,143 = 139,561.27 : x
  2. Step 2: Convert to fraction form
    379,279.04/569,143 = 139,561.27/x
  3. Step 3: Cross multiply
    379,279.04x = 569,143 × 139,561.27
  4. Step 4: Simplify right side
    379,279.04x = 79,430,319,891.61
  5. Step 5: Solve for x
    x = 79,430,319,891.61/379,279.04
  6. Step 6: Final answer
    x = 209,424.49

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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.