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Finding the Fourth Proportional to 347,804.80, 521,707.20 and 137,334.40

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Solution

The fourth proportional to 347,804.80, 521,707.20 and 137,334.40 is: 206,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,804.80 : 521,707.20 = 137,334.40 : x
  2. Step 2: Convert to fraction form
    347,804.80/521,707.20 = 137,334.40/x
  3. Step 3: Cross multiply
    347,804.80x = 521,707.20 × 137,334.40
  4. Step 4: Simplify right side
    347,804.80x = 71,648,345,287.68
  5. Step 5: Solve for x
    x = 71,648,345,287.68/347,804.80
  6. Step 6: Final answer
    x = 206,001.60

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1.5x scale

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.