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Finding the Fourth Proportional to 356,321.83, 534,507.69 and 143,089.74

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Solution

The fourth proportional to 356,321.83, 534,507.69 and 143,089.74 is: 214,644.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,321.83 : 534,507.69 = 143,089.74 : x
  2. Step 2: Convert to fraction form
    356,321.83/534,507.69 = 143,089.74/x
  3. Step 3: Cross multiply
    356,321.83x = 534,507.69 × 143,089.74
  4. Step 4: Simplify right side
    356,321.83x = 76,482,563,002.11
  5. Step 5: Solve for x
    x = 76,482,563,002.11/356,321.83
  6. Step 6: Final answer
    x = 214,644.62

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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.