Home / 379,427.02-523,619.85-209,672.08

Finding the Fourth Proportional to 379,427.02, 523,619.85 and 209,672.08

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Solution

The fourth proportional to 379,427.02, 523,619.85 and 209,672.08 is: 289,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,427.02 : 523,619.85 = 209,672.08 : x
  2. Step 2: Convert to fraction form
    379,427.02/523,619.85 = 209,672.08/x
  3. Step 3: Cross multiply
    379,427.02x = 523,619.85 × 209,672.08
  4. Step 4: Simplify right side
    379,427.02x = 109,788,463,078.79
  5. Step 5: Solve for x
    x = 109,788,463,078.79/379,427.02
  6. Step 6: Final answer
    x = 289,353.31

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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.