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Finding the Fourth Proportional to 317,407.89, 437,990.99 and 190,080.21

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Solution

The fourth proportional to 317,407.89, 437,990.99 and 190,080.21 is: 262,291.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,407.89 : 437,990.99 = 190,080.21 : x
  2. Step 2: Convert to fraction form
    317,407.89/437,990.99 = 190,080.21/x
  3. Step 3: Cross multiply
    317,407.89x = 437,990.99 × 190,080.21
  4. Step 4: Simplify right side
    317,407.89x = 83,253,418,406.91
  5. Step 5: Solve for x
    x = 83,253,418,406.91/317,407.89
  6. Step 6: Final answer
    x = 262,291.58

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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.