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Finding the Fourth Proportional to 418,602.06, 627,905.52 and 103,056.84

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Solution

The fourth proportional to 418,602.06, 627,905.52 and 103,056.84 is: 154,585.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,602.06 : 627,905.52 = 103,056.84 : x
  2. Step 2: Convert to fraction form
    418,602.06/627,905.52 = 103,056.84/x
  3. Step 3: Cross multiply
    418,602.06x = 627,905.52 × 103,056.84
  4. Step 4: Simplify right side
    418,602.06x = 64,709,958,709.76
  5. Step 5: Solve for x
    x = 64,709,958,709.76/418,602.06
  6. Step 6: Final answer
    x = 154,585.86

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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.