Home / 291,677.21-437,540.52-81,315.35

Finding the Fourth Proportional to 291,677.21, 437,540.52 and 81,315.35

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Solution

The fourth proportional to 291,677.21, 437,540.52 and 81,315.35 is: 121,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,677.21 : 437,540.52 = 81,315.35 : x
  2. Step 2: Convert to fraction form
    291,677.21/437,540.52 = 81,315.35/x
  3. Step 3: Cross multiply
    291,677.21x = 437,540.52 × 81,315.35
  4. Step 4: Simplify right side
    291,677.21x = 35,578,760,522.98
  5. Step 5: Solve for x
    x = 35,578,760,522.98/291,677.21
  6. Step 6: Final answer
    x = 121,979.91

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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.