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Finding the Fourth Proportional to 418,510.86, 627,671.64 and 118,984.80

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Solution

The fourth proportional to 418,510.86, 627,671.64 and 118,984.80 is: 178,450.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,510.86 : 627,671.64 = 118,984.80 : x
  2. Step 2: Convert to fraction form
    418,510.86/627,671.64 = 118,984.80/x
  3. Step 3: Cross multiply
    418,510.86x = 627,671.64 × 118,984.80
  4. Step 4: Simplify right side
    418,510.86x = 74,683,384,551.07
  5. Step 5: Solve for x
    x = 74,683,384,551.07/418,510.86
  6. Step 6: Final answer
    x = 178,450.29

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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.