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Finding the Fourth Proportional to 356,246.56, 534,320.43 and 89,990.65

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Solution

The fourth proportional to 356,246.56, 534,320.43 and 89,990.65 is: 134,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,246.56 : 534,320.43 = 89,990.65 : x
  2. Step 2: Convert to fraction form
    356,246.56/534,320.43 = 89,990.65/x
  3. Step 3: Cross multiply
    356,246.56x = 534,320.43 × 89,990.65
  4. Step 4: Simplify right side
    356,246.56x = 48,083,842,803.98
  5. Step 5: Solve for x
    x = 48,083,842,803.98/356,246.56
  6. Step 6: Final answer
    x = 134,973.49

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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.