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Finding the Fourth Proportional to 286,045.34, 428,901.84 and 108,455.47

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Solution

The fourth proportional to 286,045.34, 428,901.84 and 108,455.47 is: 162,620.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,045.34 : 428,901.84 = 108,455.47 : x
  2. Step 2: Convert to fraction form
    286,045.34/428,901.84 = 108,455.47/x
  3. Step 3: Cross multiply
    286,045.34x = 428,901.84 × 108,455.47
  4. Step 4: Simplify right side
    286,045.34x = 46,516,749,568.81
  5. Step 5: Solve for x
    x = 46,516,749,568.81/286,045.34
  6. Step 6: Final answer
    x = 162,620.20

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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.