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Finding the Fourth Proportional to 478,643.92, 718,051.28 and 158,814.96

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Solution

The fourth proportional to 478,643.92, 718,051.28 and 158,814.96 is: 238,250.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,643.92 : 718,051.28 = 158,814.96 : x
  2. Step 2: Convert to fraction form
    478,643.92/718,051.28 = 158,814.96/x
  3. Step 3: Cross multiply
    478,643.92x = 718,051.28 × 158,814.96
  4. Step 4: Simplify right side
    478,643.92x = 114,037,285,311.15
  5. Step 5: Solve for x
    x = 114,037,285,311.15/478,643.92
  6. Step 6: Final answer
    x = 238,250.78

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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.