Home / 311,985.12-467,868.18-87,285.18

Finding the Fourth Proportional to 311,985.12, 467,868.18 and 87,285.18

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Solution

The fourth proportional to 311,985.12, 467,868.18 and 87,285.18 is: 130,897.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,985.12 : 467,868.18 = 87,285.18 : x
  2. Step 2: Convert to fraction form
    311,985.12/467,868.18 = 87,285.18/x
  3. Step 3: Cross multiply
    311,985.12x = 467,868.18 × 87,285.18
  4. Step 4: Simplify right side
    311,985.12x = 40,837,958,307.57
  5. Step 5: Solve for x
    x = 40,837,958,307.57/311,985.12
  6. Step 6: Final answer
    x = 130,897.13

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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.