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Finding the Fourth Proportional to 262,019.20, 392,121.60 and 156,913.60

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Solution

The fourth proportional to 262,019.20, 392,121.60 and 156,913.60 is: 234,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,019.20 : 392,121.60 = 156,913.60 : x
  2. Step 2: Convert to fraction form
    262,019.20/392,121.60 = 156,913.60/x
  3. Step 3: Cross multiply
    262,019.20x = 392,121.60 × 156,913.60
  4. Step 4: Simplify right side
    262,019.20x = 61,529,211,893.76
  5. Step 5: Solve for x
    x = 61,529,211,893.76/262,019.20
  6. Step 6: Final answer
    x = 234,827.11

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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.