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Finding the Fourth Proportional to 399,637.54, 598,939.58 and 299,008.20

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Solution

The fourth proportional to 399,637.54, 598,939.58 and 299,008.20 is: 448,125.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,637.54 : 598,939.58 = 299,008.20 : x
  2. Step 2: Convert to fraction form
    399,637.54/598,939.58 = 299,008.20/x
  3. Step 3: Cross multiply
    399,637.54x = 598,939.58 × 299,008.20
  4. Step 4: Simplify right side
    399,637.54x = 179,087,845,724.56
  5. Step 5: Solve for x
    x = 179,087,845,724.56/399,637.54
  6. Step 6: Final answer
    x = 448,125.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.