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Finding the Fourth Proportional to 279,602.78, 385,856.23 and 152,278.27

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Solution

The fourth proportional to 279,602.78, 385,856.23 and 152,278.27 is: 210,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,602.78 : 385,856.23 = 152,278.27 : x
  2. Step 2: Convert to fraction form
    279,602.78/385,856.23 = 152,278.27/x
  3. Step 3: Cross multiply
    279,602.78x = 385,856.23 × 152,278.27
  4. Step 4: Simplify right side
    279,602.78x = 58,757,517,827.79
  5. Step 5: Solve for x
    x = 58,757,517,827.79/279,602.78
  6. Step 6: Final answer
    x = 210,146.40

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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.