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Finding the Fourth Proportional to 356,390.64, 534,585.96 and 143,255.52

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Solution

The fourth proportional to 356,390.64, 534,585.96 and 143,255.52 is: 214,883.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,390.64 : 534,585.96 = 143,255.52 : x
  2. Step 2: Convert to fraction form
    356,390.64/534,585.96 = 143,255.52/x
  3. Step 3: Cross multiply
    356,390.64x = 534,585.96 × 143,255.52
  4. Step 4: Simplify right side
    356,390.64x = 76,582,389,684.50
  5. Step 5: Solve for x
    x = 76,582,389,684.50/356,390.64
  6. Step 6: Final answer
    x = 214,883.28

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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.