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Finding the Fourth Proportional to 279,362.69, 385,513.12 and 152,035.55

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Solution

The fourth proportional to 279,362.69, 385,513.12 and 152,035.55 is: 209,805.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,362.69 : 385,513.12 = 152,035.55 : x
  2. Step 2: Convert to fraction form
    279,362.69/385,513.12 = 152,035.55/x
  3. Step 3: Cross multiply
    279,362.69x = 385,513.12 × 152,035.55
  4. Step 4: Simplify right side
    279,362.69x = 58,611,699,231.42
  5. Step 5: Solve for x
    x = 58,611,699,231.42/279,362.69
  6. Step 6: Final answer
    x = 209,805.04

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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.