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Finding the Fourth Proportional to 228,200.40, 342,300.60 and 139,626.90

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Solution

The fourth proportional to 228,200.40, 342,300.60 and 139,626.90 is: 209,440.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,200.40 : 342,300.60 = 139,626.90 : x
  2. Step 2: Convert to fraction form
    228,200.40/342,300.60 = 139,626.90/x
  3. Step 3: Cross multiply
    228,200.40x = 342,300.60 × 139,626.90
  4. Step 4: Simplify right side
    228,200.40x = 47,794,371,646.14
  5. Step 5: Solve for x
    x = 47,794,371,646.14/228,200.40
  6. Step 6: Final answer
    x = 209,440.35

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1.5x scale

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.