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Finding the Fourth Proportional to 310,521, 428,515.16 and 174,577.62

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Solution

The fourth proportional to 310,521, 428,515.16 and 174,577.62 is: 240,914.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,521 : 428,515.16 = 174,577.62 : x
  2. Step 2: Convert to fraction form
    310,521/428,515.16 = 174,577.62/x
  3. Step 3: Cross multiply
    310,521x = 428,515.16 × 174,577.62
  4. Step 4: Simplify right side
    310,521x = 74,809,156,766.72
  5. Step 5: Solve for x
    x = 74,809,156,766.72/310,521
  6. Step 6: Final answer
    x = 240,914.97

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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.