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Finding the Fourth Proportional to 279,564.54, 385,799.67 and 152,237.40

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Solution

The fourth proportional to 279,564.54, 385,799.67 and 152,237.40 is: 210,087.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,564.54 : 385,799.67 = 152,237.40 : x
  2. Step 2: Convert to fraction form
    279,564.54/385,799.67 = 152,237.40/x
  3. Step 3: Cross multiply
    279,564.54x = 385,799.67 × 152,237.40
  4. Step 4: Simplify right side
    279,564.54x = 58,733,138,681.66
  5. Step 5: Solve for x
    x = 58,733,138,681.66/279,564.54
  6. Step 6: Final answer
    x = 210,087.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.