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Finding the Fourth Proportional to 400,803.39, 601,190.51 and 120,313.35

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Solution

The fourth proportional to 400,803.39, 601,190.51 and 120,313.35 is: 180,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,803.39 : 601,190.51 = 120,313.35 : x
  2. Step 2: Convert to fraction form
    400,803.39/601,190.51 = 120,313.35/x
  3. Step 3: Cross multiply
    400,803.39x = 601,190.51 × 120,313.35
  4. Step 4: Simplify right side
    400,803.39x = 72,331,243,644.74
  5. Step 5: Solve for x
    x = 72,331,243,644.74/400,803.39
  6. Step 6: Final answer
    x = 180,465.65

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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.