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Finding the Fourth Proportional to 458,809.44, 688,189.86 and 143,230.20

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Solution

The fourth proportional to 458,809.44, 688,189.86 and 143,230.20 is: 214,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,809.44 : 688,189.86 = 143,230.20 : x
  2. Step 2: Convert to fraction form
    458,809.44/688,189.86 = 143,230.20/x
  3. Step 3: Cross multiply
    458,809.44x = 688,189.86 × 143,230.20
  4. Step 4: Simplify right side
    458,809.44x = 98,569,571,285.77
  5. Step 5: Solve for x
    x = 98,569,571,285.77/458,809.44
  6. Step 6: Final answer
    x = 214,837.71

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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.