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Finding the Fourth Proportional to 279,427.84, 385,594.78 and 152,095.84

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Solution

The fourth proportional to 279,427.84, 385,594.78 and 152,095.84 is: 209,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,427.84 : 385,594.78 = 152,095.84 : x
  2. Step 2: Convert to fraction form
    279,427.84/385,594.78 = 152,095.84/x
  3. Step 3: Cross multiply
    279,427.84x = 385,594.78 × 152,095.84
  4. Step 4: Simplify right side
    279,427.84x = 58,647,361,963.72
  5. Step 5: Solve for x
    x = 58,647,361,963.72/279,427.84
  6. Step 6: Final answer
    x = 209,883.75

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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.