Home / 379,215.17-523,319.65-209,449.30

Finding the Fourth Proportional to 379,215.17, 523,319.65 and 209,449.30

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Solution

The fourth proportional to 379,215.17, 523,319.65 and 209,449.30 is: 289,041.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,215.17 : 523,319.65 = 209,449.30 : x
  2. Step 2: Convert to fraction form
    379,215.17/523,319.65 = 209,449.30/x
  3. Step 3: Cross multiply
    379,215.17x = 523,319.65 × 209,449.30
  4. Step 4: Simplify right side
    379,215.17x = 109,608,934,368.75
  5. Step 5: Solve for x
    x = 109,608,934,368.75/379,215.17
  6. Step 6: Final answer
    x = 289,041.53

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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.