Home / 479,027.86-661,068.02-309,557.23

Finding the Fourth Proportional to 479,027.86, 661,068.02 and 309,557.23

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Solution

The fourth proportional to 479,027.86, 661,068.02 and 309,557.23 is: 427,195.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,027.86 : 661,068.02 = 309,557.23 : x
  2. Step 2: Convert to fraction form
    479,027.86/661,068.02 = 309,557.23/x
  3. Step 3: Cross multiply
    479,027.86x = 661,068.02 × 309,557.23
  4. Step 4: Simplify right side
    479,027.86x = 204,638,385,112.79
  5. Step 5: Solve for x
    x = 204,638,385,112.79/479,027.86
  6. Step 6: Final answer
    x = 427,195.16

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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.