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Finding the Fourth Proportional to 373,491.53, 515,383.67 and 212,315.10

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Solution

The fourth proportional to 373,491.53, 515,383.67 and 212,315.10 is: 292,975.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,491.53 : 515,383.67 = 212,315.10 : x
  2. Step 2: Convert to fraction form
    373,491.53/515,383.67 = 212,315.10/x
  3. Step 3: Cross multiply
    373,491.53x = 515,383.67 × 212,315.10
  4. Step 4: Simplify right side
    373,491.53x = 109,423,734,372.84
  5. Step 5: Solve for x
    x = 109,423,734,372.84/373,491.53
  6. Step 6: Final answer
    x = 292,975.15

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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.