Home / 371,039.04-512,034.05-209,890.67

Finding the Fourth Proportional to 371,039.04, 512,034.05 and 209,890.67

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Solution

The fourth proportional to 371,039.04, 512,034.05 and 209,890.67 is: 289,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,039.04 : 512,034.05 = 209,890.67 : x
  2. Step 2: Convert to fraction form
    371,039.04/512,034.05 = 209,890.67/x
  3. Step 3: Cross multiply
    371,039.04x = 512,034.05 × 209,890.67
  4. Step 4: Simplify right side
    371,039.04x = 107,471,167,781.87
  5. Step 5: Solve for x
    x = 107,471,167,781.87/371,039.04
  6. Step 6: Final answer
    x = 289,649.22

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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.