Home / 311,985.11-467,868.18-87,285.17

Finding the Fourth Proportional to 311,985.11, 467,868.18 and 87,285.17

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Solution

The fourth proportional to 311,985.11, 467,868.18 and 87,285.17 is: 130,897.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,985.11 : 467,868.18 = 87,285.17 : x
  2. Step 2: Convert to fraction form
    311,985.11/467,868.18 = 87,285.17/x
  3. Step 3: Cross multiply
    311,985.11x = 467,868.18 × 87,285.17
  4. Step 4: Simplify right side
    311,985.11x = 40,837,953,628.89
  5. Step 5: Solve for x
    x = 40,837,953,628.89/311,985.11
  6. Step 6: Final answer
    x = 130,897.12

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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.