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Finding the Fourth Proportional to 347,598.60, 521,570.70 and 137,243.40

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Solution

The fourth proportional to 347,598.60, 521,570.70 and 137,243.40 is: 205,933.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,598.60 : 521,570.70 = 137,243.40 : x
  2. Step 2: Convert to fraction form
    347,598.60/521,570.70 = 137,243.40/x
  3. Step 3: Cross multiply
    347,598.60x = 521,570.70 × 137,243.40
  4. Step 4: Simplify right side
    347,598.60x = 71,582,136,208.38
  5. Step 5: Solve for x
    x = 71,582,136,208.38/347,598.60
  6. Step 6: Final answer
    x = 205,933.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.