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Finding the Fourth Proportional to 478,687.64, 718,029.23 and 141,730.34

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Solution

The fourth proportional to 478,687.64, 718,029.23 and 141,730.34 is: 212,594.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,687.64 : 718,029.23 = 141,730.34 : x
  2. Step 2: Convert to fraction form
    478,687.64/718,029.23 = 141,730.34/x
  3. Step 3: Cross multiply
    478,687.64x = 718,029.23 × 141,730.34
  4. Step 4: Simplify right side
    478,687.64x = 101,766,522,599.04
  5. Step 5: Solve for x
    x = 101,766,522,599.04/478,687.64
  6. Step 6: Final answer
    x = 212,594.84

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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.