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Finding the Fourth Proportional to 385,850.49, 532,003.17 and 283,564.50

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Solution

The fourth proportional to 385,850.49, 532,003.17 and 283,564.50 is: 390,973.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,850.49 : 532,003.17 = 283,564.50 : x
  2. Step 2: Convert to fraction form
    385,850.49/532,003.17 = 283,564.50/x
  3. Step 3: Cross multiply
    385,850.49x = 532,003.17 × 283,564.50
  4. Step 4: Simplify right side
    385,850.49x = 150,857,212,899.47
  5. Step 5: Solve for x
    x = 150,857,212,899.47/385,850.49
  6. Step 6: Final answer
    x = 390,973.23

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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.