Home / 228,099.20-342,116.40-78,346.40

Finding the Fourth Proportional to 228,099.20, 342,116.40 and 78,346.40

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Solution

The fourth proportional to 228,099.20, 342,116.40 and 78,346.40 is: 117,508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,099.20 : 342,116.40 = 78,346.40 : x
  2. Step 2: Convert to fraction form
    228,099.20/342,116.40 = 78,346.40/x
  3. Step 3: Cross multiply
    228,099.20x = 342,116.40 × 78,346.40
  4. Step 4: Simplify right side
    228,099.20x = 26,803,588,320.96
  5. Step 5: Solve for x
    x = 26,803,588,320.96/228,099.20
  6. Step 6: Final answer
    x = 117,508.47

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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.