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Finding the Fourth Proportional to 354,656.76, 489,354.66 and 225,646.44

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Solution

The fourth proportional to 354,656.76, 489,354.66 and 225,646.44 is: 311,346.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,656.76 : 489,354.66 = 225,646.44 : x
  2. Step 2: Convert to fraction form
    354,656.76/489,354.66 = 225,646.44/x
  3. Step 3: Cross multiply
    354,656.76x = 489,354.66 × 225,646.44
  4. Step 4: Simplify right side
    354,656.76x = 110,421,136,926.41
  5. Step 5: Solve for x
    x = 110,421,136,926.41/354,656.76
  6. Step 6: Final answer
    x = 311,346.49

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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.