Home / 289,670.20-434,699.70-171,215.80

Finding the Fourth Proportional to 289,670.20, 434,699.70 and 171,215.80

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Solution

The fourth proportional to 289,670.20, 434,699.70 and 171,215.80 is: 256,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,670.20 : 434,699.70 = 171,215.80 : x
  2. Step 2: Convert to fraction form
    289,670.20/434,699.70 = 171,215.80/x
  3. Step 3: Cross multiply
    289,670.20x = 434,699.70 × 171,215.80
  4. Step 4: Simplify right side
    289,670.20x = 74,427,456,895.26
  5. Step 5: Solve for x
    x = 74,427,456,895.26/289,670.20
  6. Step 6: Final answer
    x = 256,938.60

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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.