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Finding the Fourth Proportional to 256,415.04, 353,496.96 and 220,982.40

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Solution

The fourth proportional to 256,415.04, 353,496.96 and 220,982.40 is: 304,649.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,415.04 : 353,496.96 = 220,982.40 : x
  2. Step 2: Convert to fraction form
    256,415.04/353,496.96 = 220,982.40/x
  3. Step 3: Cross multiply
    256,415.04x = 353,496.96 × 220,982.40
  4. Step 4: Simplify right side
    256,415.04x = 78,116,606,613.50
  5. Step 5: Solve for x
    x = 78,116,606,613.50/256,415.04
  6. Step 6: Final answer
    x = 304,649.08

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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.