Home / 306,881.22-423,381.47-306,408.11

Finding the Fourth Proportional to 306,881.22, 423,381.47 and 306,408.11

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Solution

The fourth proportional to 306,881.22, 423,381.47 and 306,408.11 is: 422,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,881.22 : 423,381.47 = 306,408.11 : x
  2. Step 2: Convert to fraction form
    306,881.22/423,381.47 = 306,408.11/x
  3. Step 3: Cross multiply
    306,881.22x = 423,381.47 × 306,408.11
  4. Step 4: Simplify right side
    306,881.22x = 129,727,512,382.77
  5. Step 5: Solve for x
    x = 129,727,512,382.77/306,881.22
  6. Step 6: Final answer
    x = 422,728.74

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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.