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Finding the Fourth Proportional to 418,935.96, 628,309.26 and 119,410.08

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Solution

The fourth proportional to 418,935.96, 628,309.26 and 119,410.08 is: 179,088.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,935.96 : 628,309.26 = 119,410.08 : x
  2. Step 2: Convert to fraction form
    418,935.96/628,309.26 = 119,410.08/x
  3. Step 3: Cross multiply
    418,935.96x = 628,309.26 × 119,410.08
  4. Step 4: Simplify right side
    418,935.96x = 75,026,459,001.34
  5. Step 5: Solve for x
    x = 75,026,459,001.34/418,935.96
  6. Step 6: Final answer
    x = 179,088.13

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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.