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Finding the Fourth Proportional to 658,273, 987,412.74 and 159,637

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Solution

The fourth proportional to 658,273, 987,412.74 and 159,637 is: 239,456.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,273 : 987,412.74 = 159,637 : x
  2. Step 2: Convert to fraction form
    658,273/987,412.74 = 159,637/x
  3. Step 3: Cross multiply
    658,273x = 987,412.74 × 159,637
  4. Step 4: Simplify right side
    658,273x = 157,627,607,575.38
  5. Step 5: Solve for x
    x = 157,627,607,575.38/658,273
  6. Step 6: Final answer
    x = 239,456.29

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1.5x scale

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.