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Finding the Fourth Proportional to 228,420.60, 341,974.80 and 139,847.10

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Solution

The fourth proportional to 228,420.60, 341,974.80 and 139,847.10 is: 209,368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,420.60 : 341,974.80 = 139,847.10 : x
  2. Step 2: Convert to fraction form
    228,420.60/341,974.80 = 139,847.10/x
  3. Step 3: Cross multiply
    228,420.60x = 341,974.80 × 139,847.10
  4. Step 4: Simplify right side
    228,420.60x = 47,824,184,053.08
  5. Step 5: Solve for x
    x = 47,824,184,053.08/228,420.60
  6. Step 6: Final answer
    x = 209,368.96

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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.