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Finding the Fourth Proportional to 292,606.20, 438,909.30 and 213,874.20

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Solution

The fourth proportional to 292,606.20, 438,909.30 and 213,874.20 is: 320,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,606.20 : 438,909.30 = 213,874.20 : x
  2. Step 2: Convert to fraction form
    292,606.20/438,909.30 = 213,874.20/x
  3. Step 3: Cross multiply
    292,606.20x = 438,909.30 × 213,874.20
  4. Step 4: Simplify right side
    292,606.20x = 93,871,375,410.06
  5. Step 5: Solve for x
    x = 93,871,375,410.06/292,606.20
  6. Step 6: Final answer
    x = 320,811.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.