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Finding the Fourth Proportional to 283,920.22, 425,355.45 and 143,343.10

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Solution

The fourth proportional to 283,920.22, 425,355.45 and 143,343.10 is: 214,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,920.22 : 425,355.45 = 143,343.10 : x
  2. Step 2: Convert to fraction form
    283,920.22/425,355.45 = 143,343.10/x
  3. Step 3: Cross multiply
    283,920.22x = 425,355.45 × 143,343.10
  4. Step 4: Simplify right side
    283,920.22x = 60,971,768,804.90
  5. Step 5: Solve for x
    x = 60,971,768,804.90/283,920.22
  6. Step 6: Final answer
    x = 214,749.65

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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.