Home / 379,317.66-523,465.11-209,541.66

Finding the Fourth Proportional to 379,317.66, 523,465.11 and 209,541.66

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Solution

The fourth proportional to 379,317.66, 523,465.11 and 209,541.66 is: 289,171.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,317.66 : 523,465.11 = 209,541.66 : x
  2. Step 2: Convert to fraction form
    379,317.66/523,465.11 = 209,541.66/x
  3. Step 3: Cross multiply
    379,317.66x = 523,465.11 × 209,541.66
  4. Step 4: Simplify right side
    379,317.66x = 109,687,748,101.48
  5. Step 5: Solve for x
    x = 109,687,748,101.48/379,317.66
  6. Step 6: Final answer
    x = 289,171.21

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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.