Home / 311,985.11-430,539.48-168,745.16

Finding the Fourth Proportional to 311,985.11, 430,539.48 and 168,745.16

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Solution

The fourth proportional to 311,985.11, 430,539.48 and 168,745.16 is: 232,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,985.11 : 430,539.48 = 168,745.16 : x
  2. Step 2: Convert to fraction form
    311,985.11/430,539.48 = 168,745.16/x
  3. Step 3: Cross multiply
    311,985.11x = 430,539.48 × 168,745.16
  4. Step 4: Simplify right side
    311,985.11x = 72,651,453,438.92
  5. Step 5: Solve for x
    x = 72,651,453,438.92/311,985.11
  6. Step 6: Final answer
    x = 232,868.34

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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.