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Finding the Fourth Proportional to 438,370.44, 604,758.96 and 256,990.56

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Solution

The fourth proportional to 438,370.44, 604,758.96 and 256,990.56 is: 354,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,370.44 : 604,758.96 = 256,990.56 : x
  2. Step 2: Convert to fraction form
    438,370.44/604,758.96 = 256,990.56/x
  3. Step 3: Cross multiply
    438,370.44x = 604,758.96 × 256,990.56
  4. Step 4: Simplify right side
    438,370.44x = 155,417,343,795.42
  5. Step 5: Solve for x
    x = 155,417,343,795.42/438,370.44
  6. Step 6: Final answer
    x = 354,534.27

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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.