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Finding the Fourth Proportional to 385,123.59, 531,632.93 and 299,108.97

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Solution

The fourth proportional to 385,123.59, 531,632.93 and 299,108.97 is: 412,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,123.59 : 531,632.93 = 299,108.97 : x
  2. Step 2: Convert to fraction form
    385,123.59/531,632.93 = 299,108.97/x
  3. Step 3: Cross multiply
    385,123.59x = 531,632.93 × 299,108.97
  4. Step 4: Simplify right side
    385,123.59x = 159,016,176,614.84
  5. Step 5: Solve for x
    x = 159,016,176,614.84/385,123.59
  6. Step 6: Final answer
    x = 412,896.49

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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.