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Finding the Fourth Proportional to 342,079.29, 512,901.60 and 300,043.80

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Solution

The fourth proportional to 342,079.29, 512,901.60 and 300,043.80 is: 449,875.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,079.29 : 512,901.60 = 300,043.80 : x
  2. Step 2: Convert to fraction form
    342,079.29/512,901.60 = 300,043.80/x
  3. Step 3: Cross multiply
    342,079.29x = 512,901.60 × 300,043.80
  4. Step 4: Simplify right side
    342,079.29x = 153,892,945,090.08
  5. Step 5: Solve for x
    x = 153,892,945,090.08/342,079.29
  6. Step 6: Final answer
    x = 449,875.07

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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.