Home / 427,999.08-642,095.90-228,214.12

Finding the Fourth Proportional to 427,999.08, 642,095.90 and 228,214.12

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Solution

The fourth proportional to 427,999.08, 642,095.90 and 228,214.12 is: 342,373.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,999.08 : 642,095.90 = 228,214.12 : x
  2. Step 2: Convert to fraction form
    427,999.08/642,095.90 = 228,214.12/x
  3. Step 3: Cross multiply
    427,999.08x = 642,095.90 × 228,214.12
  4. Step 4: Simplify right side
    427,999.08x = 146,535,350,774.11
  5. Step 5: Solve for x
    x = 146,535,350,774.11/427,999.08
  6. Step 6: Final answer
    x = 342,373.05

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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.