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Finding the Fourth Proportional to 310,329.66, 428,243.01 and 174,369.34

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Solution

The fourth proportional to 310,329.66, 428,243.01 and 174,369.34 is: 240,622.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,329.66 : 428,243.01 = 174,369.34 : x
  2. Step 2: Convert to fraction form
    310,329.66/428,243.01 = 174,369.34/x
  3. Step 3: Cross multiply
    310,329.66x = 428,243.01 × 174,369.34
  4. Step 4: Simplify right side
    310,329.66x = 74,672,451,385.15
  5. Step 5: Solve for x
    x = 74,672,451,385.15/310,329.66
  6. Step 6: Final answer
    x = 240,622.99

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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.