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Finding the Fourth Proportional to 356,459.37, 534,756.49 and 143,243.88

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Solution

The fourth proportional to 356,459.37, 534,756.49 and 143,243.88 is: 214,892.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,459.37 : 534,756.49 = 143,243.88 : x
  2. Step 2: Convert to fraction form
    356,459.37/534,756.49 = 143,243.88/x
  3. Step 3: Cross multiply
    356,459.37x = 534,756.49 × 143,243.88
  4. Step 4: Simplify right side
    356,459.37x = 76,600,594,482.78
  5. Step 5: Solve for x
    x = 76,600,594,482.78/356,459.37
  6. Step 6: Final answer
    x = 214,892.92

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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.