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Finding the Fourth Proportional to 279,295.50, 385,424.55 and 151,968.90

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Solution

The fourth proportional to 279,295.50, 385,424.55 and 151,968.90 is: 209,715.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,295.50 : 385,424.55 = 151,968.90 : x
  2. Step 2: Convert to fraction form
    279,295.50/385,424.55 = 151,968.90/x
  3. Step 3: Cross multiply
    279,295.50x = 385,424.55 × 151,968.90
  4. Step 4: Simplify right side
    279,295.50x = 58,572,544,896.50
  5. Step 5: Solve for x
    x = 58,572,544,896.50/279,295.50
  6. Step 6: Final answer
    x = 209,715.32

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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.