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Finding the Fourth Proportional to 279,297, 385,426.62 and 151,970.40

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Solution

The fourth proportional to 279,297, 385,426.62 and 151,970.40 is: 209,717.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,297 : 385,426.62 = 151,970.40 : x
  2. Step 2: Convert to fraction form
    279,297/385,426.62 = 151,970.40/x
  3. Step 3: Cross multiply
    279,297x = 385,426.62 × 151,970.40
  4. Step 4: Simplify right side
    279,297x = 58,573,437,612.05
  5. Step 5: Solve for x
    x = 58,573,437,612.05/279,297
  6. Step 6: Final answer
    x = 209,717.39

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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.