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Finding the Fourth Proportional to 256,888.08, 354,271.36 and 220,578.20

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Solution

The fourth proportional to 256,888.08, 354,271.36 and 220,578.20 is: 304,196.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,888.08 : 354,271.36 = 220,578.20 : x
  2. Step 2: Convert to fraction form
    256,888.08/354,271.36 = 220,578.20/x
  3. Step 3: Cross multiply
    256,888.08x = 354,271.36 × 220,578.20
  4. Step 4: Simplify right side
    256,888.08x = 78,144,538,900.35
  5. Step 5: Solve for x
    x = 78,144,538,900.35/256,888.08
  6. Step 6: Final answer
    x = 304,196.83

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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.