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Finding the Fourth Proportional to 418,222.40, 626,980.94 and 181,386.70

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Solution

The fourth proportional to 418,222.40, 626,980.94 and 181,386.70 is: 271,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,222.40 : 626,980.94 = 181,386.70 : x
  2. Step 2: Convert to fraction form
    418,222.40/626,980.94 = 181,386.70/x
  3. Step 3: Cross multiply
    418,222.40x = 626,980.94 × 181,386.70
  4. Step 4: Simplify right side
    418,222.40x = 113,725,999,627.66
  5. Step 5: Solve for x
    x = 113,725,999,627.66/418,222.40
  6. Step 6: Final answer
    x = 271,927.09

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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.