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Finding the Fourth Proportional to 478,783.86, 718,193.95 and 179,232.90

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Solution

The fourth proportional to 478,783.86, 718,193.95 and 179,232.90 is: 268,856.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,783.86 : 718,193.95 = 179,232.90 : x
  2. Step 2: Convert to fraction form
    478,783.86/718,193.95 = 179,232.90/x
  3. Step 3: Cross multiply
    478,783.86x = 718,193.95 × 179,232.90
  4. Step 4: Simplify right side
    478,783.86x = 128,723,984,420.96
  5. Step 5: Solve for x
    x = 128,723,984,420.96/478,783.86
  6. Step 6: Final answer
    x = 268,856.15

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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.