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Finding the Fourth Proportional to 309,427.76, 427,010.30 and 175,291.76

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Solution

The fourth proportional to 309,427.76, 427,010.30 and 175,291.76 is: 241,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,427.76 : 427,010.30 = 175,291.76 : x
  2. Step 2: Convert to fraction form
    309,427.76/427,010.30 = 175,291.76/x
  3. Step 3: Cross multiply
    309,427.76x = 427,010.30 × 175,291.76
  4. Step 4: Simplify right side
    309,427.76x = 74,851,387,025.13
  5. Step 5: Solve for x
    x = 74,851,387,025.13/309,427.76
  6. Step 6: Final answer
    x = 241,902.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.