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Finding the Fourth Proportional to 279,352.79, 385,508.21 and 152,028.38

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Solution

The fourth proportional to 279,352.79, 385,508.21 and 152,028.38 is: 209,799.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,352.79 : 385,508.21 = 152,028.38 : x
  2. Step 2: Convert to fraction form
    279,352.79/385,508.21 = 152,028.38/x
  3. Step 3: Cross multiply
    279,352.79x = 385,508.21 × 152,028.38
  4. Step 4: Simplify right side
    279,352.79x = 58,608,185,955.32
  5. Step 5: Solve for x
    x = 58,608,185,955.32/279,352.79
  6. Step 6: Final answer
    x = 209,799.90

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1.5x scale

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.