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Finding the Fourth Proportional to 279,609.49, 385,861.07 and 152,285.08

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Solution

The fourth proportional to 279,609.49, 385,861.07 and 152,285.08 is: 210,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,609.49 : 385,861.07 = 152,285.08 : x
  2. Step 2: Convert to fraction form
    279,609.49/385,861.07 = 152,285.08/x
  3. Step 3: Cross multiply
    279,609.49x = 385,861.07 × 152,285.08
  4. Step 4: Simplify right side
    279,609.49x = 58,760,883,913.84
  5. Step 5: Solve for x
    x = 58,760,883,913.84/279,609.49
  6. Step 6: Final answer
    x = 210,153.40

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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.