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Finding the Fourth Proportional to 368,333.28, 508,305.12 and 217,430.24

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Solution

The fourth proportional to 368,333.28, 508,305.12 and 217,430.24 is: 300,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,333.28 : 508,305.12 = 217,430.24 : x
  2. Step 2: Convert to fraction form
    368,333.28/508,305.12 = 217,430.24/x
  3. Step 3: Cross multiply
    368,333.28x = 508,305.12 × 217,430.24
  4. Step 4: Simplify right side
    368,333.28x = 110,520,904,234.83
  5. Step 5: Solve for x
    x = 110,520,904,234.83/368,333.28
  6. Step 6: Final answer
    x = 300,056.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.