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Finding the Fourth Proportional to 438,118.29, 604,611 and 256,960.89

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Solution

The fourth proportional to 438,118.29, 604,611 and 256,960.89 is: 354,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,118.29 : 604,611 = 256,960.89 : x
  2. Step 2: Convert to fraction form
    438,118.29/604,611 = 256,960.89/x
  3. Step 3: Cross multiply
    438,118.29x = 604,611 × 256,960.89
  4. Step 4: Simplify right side
    438,118.29x = 155,361,380,663.79
  5. Step 5: Solve for x
    x = 155,361,380,663.79/438,118.29
  6. Step 6: Final answer
    x = 354,610.58

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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.