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Finding the Fourth Proportional to 478,467.76, 717,677.79 and 178,926.32

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Solution

The fourth proportional to 478,467.76, 717,677.79 and 178,926.32 is: 268,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,467.76 : 717,677.79 = 178,926.32 : x
  2. Step 2: Convert to fraction form
    478,467.76/717,677.79 = 178,926.32/x
  3. Step 3: Cross multiply
    478,467.76x = 717,677.79 × 178,926.32
  4. Step 4: Simplify right side
    478,467.76x = 128,411,444,506.41
  5. Step 5: Solve for x
    x = 128,411,444,506.41/478,467.76
  6. Step 6: Final answer
    x = 268,380.56

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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.