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Finding the Fourth Proportional to 310,188.84, 428,062.32 and 174,222.80

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Solution

The fourth proportional to 310,188.84, 428,062.32 and 174,222.80 is: 240,428.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,188.84 : 428,062.32 = 174,222.80 : x
  2. Step 2: Convert to fraction form
    310,188.84/428,062.32 = 174,222.80/x
  3. Step 3: Cross multiply
    310,188.84x = 428,062.32 × 174,222.80
  4. Step 4: Simplify right side
    310,188.84x = 74,578,215,964.90
  5. Step 5: Solve for x
    x = 74,578,215,964.90/310,188.84
  6. Step 6: Final answer
    x = 240,428.43

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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.