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Finding the Fourth Proportional to 310,519, 428,512.40 and 174,575.62

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Solution

The fourth proportional to 310,519, 428,512.40 and 174,575.62 is: 240,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,519 : 428,512.40 = 174,575.62 : x
  2. Step 2: Convert to fraction form
    310,519/428,512.40 = 174,575.62/x
  3. Step 3: Cross multiply
    310,519x = 428,512.40 × 174,575.62
  4. Step 4: Simplify right side
    310,519x = 74,807,817,907.69
  5. Step 5: Solve for x
    x = 74,807,817,907.69/310,519
  6. Step 6: Final answer
    x = 240,912.21

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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.