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Finding the Fourth Proportional to 256,502.80, 384,754.20 and 69,514.30

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Solution

The fourth proportional to 256,502.80, 384,754.20 and 69,514.30 is: 104,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,502.80 : 384,754.20 = 69,514.30 : x
  2. Step 2: Convert to fraction form
    256,502.80/384,754.20 = 69,514.30/x
  3. Step 3: Cross multiply
    256,502.80x = 384,754.20 × 69,514.30
  4. Step 4: Simplify right side
    256,502.80x = 26,745,918,885.06
  5. Step 5: Solve for x
    x = 26,745,918,885.06/256,502.80
  6. Step 6: Final answer
    x = 104,271.45

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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.