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Finding the Fourth Proportional to 310,388.80, 428,304.63 and 174,401.14

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Solution

The fourth proportional to 310,388.80, 428,304.63 and 174,401.14 is: 240,655.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,388.80 : 428,304.63 = 174,401.14 : x
  2. Step 2: Convert to fraction form
    310,388.80/428,304.63 = 174,401.14/x
  3. Step 3: Cross multiply
    310,388.80x = 428,304.63 × 174,401.14
  4. Step 4: Simplify right side
    310,388.80x = 74,696,815,739.28
  5. Step 5: Solve for x
    x = 74,696,815,739.28/310,388.80
  6. Step 6: Final answer
    x = 240,655.64

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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.