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Finding the Fourth Proportional to 353,285.10, 530,102.90 and 140,048.50

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Solution

The fourth proportional to 353,285.10, 530,102.90 and 140,048.50 is: 210,142.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,285.10 : 530,102.90 = 140,048.50 : x
  2. Step 2: Convert to fraction form
    353,285.10/530,102.90 = 140,048.50/x
  3. Step 3: Cross multiply
    353,285.10x = 530,102.90 × 140,048.50
  4. Step 4: Simplify right side
    353,285.10x = 74,240,115,990.65
  5. Step 5: Solve for x
    x = 74,240,115,990.65/353,285.10
  6. Step 6: Final answer
    x = 210,142.22

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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.