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Finding the Fourth Proportional to 310,612.84, 428,052.72 and 267,578.80

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Solution

The fourth proportional to 310,612.84, 428,052.72 and 267,578.80 is: 368,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,612.84 : 428,052.72 = 267,578.80 : x
  2. Step 2: Convert to fraction form
    310,612.84/428,052.72 = 267,578.80/x
  3. Step 3: Cross multiply
    310,612.84x = 428,052.72 × 267,578.80
  4. Step 4: Simplify right side
    310,612.84x = 114,537,833,154.34
  5. Step 5: Solve for x
    x = 114,537,833,154.34/310,612.84
  6. Step 6: Final answer
    x = 368,747.90

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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.