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Finding the Fourth Proportional to 283,281.90, 423,938.70 and 259,662.30

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Solution

The fourth proportional to 283,281.90, 423,938.70 and 259,662.30 is: 388,591.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,281.90 : 423,938.70 = 259,662.30 : x
  2. Step 2: Convert to fraction form
    283,281.90/423,938.70 = 259,662.30/x
  3. Step 3: Cross multiply
    283,281.90x = 423,938.70 × 259,662.30
  4. Step 4: Simplify right side
    283,281.90x = 110,080,897,901.01
  5. Step 5: Solve for x
    x = 110,080,897,901.01/283,281.90
  6. Step 6: Final answer
    x = 388,591.36

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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.