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Finding the Fourth Proportional to 286,411.20, 429,325.20 and 168,021.60

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Solution

The fourth proportional to 286,411.20, 429,325.20 and 168,021.60 is: 251,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,411.20 : 429,325.20 = 168,021.60 : x
  2. Step 2: Convert to fraction form
    286,411.20/429,325.20 = 168,021.60/x
  3. Step 3: Cross multiply
    286,411.20x = 429,325.20 × 168,021.60
  4. Step 4: Simplify right side
    286,411.20x = 72,135,907,024.32
  5. Step 5: Solve for x
    x = 72,135,907,024.32/286,411.20
  6. Step 6: Final answer
    x = 251,861.33

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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.