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Finding the Fourth Proportional to 279,683.52, 385,959.77 and 152,356.38

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Solution

The fourth proportional to 279,683.52, 385,959.77 and 152,356.38 is: 210,249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,683.52 : 385,959.77 = 152,356.38 : x
  2. Step 2: Convert to fraction form
    279,683.52/385,959.77 = 152,356.38/x
  3. Step 3: Cross multiply
    279,683.52x = 385,959.77 × 152,356.38
  4. Step 4: Simplify right side
    279,683.52x = 58,803,432,621.05
  5. Step 5: Solve for x
    x = 58,803,432,621.05/279,683.52
  6. Step 6: Final answer
    x = 210,249.90

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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.