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Finding the Fourth Proportional to 402,009.60, 603,014.40 and 268,165.20

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Solution

The fourth proportional to 402,009.60, 603,014.40 and 268,165.20 is: 402,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,009.60 : 603,014.40 = 268,165.20 : x
  2. Step 2: Convert to fraction form
    402,009.60/603,014.40 = 268,165.20/x
  3. Step 3: Cross multiply
    402,009.60x = 603,014.40 × 268,165.20
  4. Step 4: Simplify right side
    402,009.60x = 161,707,477,178.88
  5. Step 5: Solve for x
    x = 161,707,477,178.88/402,009.60
  6. Step 6: Final answer
    x = 402,247.80

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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.