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Finding the Fourth Proportional to 371,804.80, 557,707.20 and 231,642.40

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Solution

The fourth proportional to 371,804.80, 557,707.20 and 231,642.40 is: 347,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,804.80 : 557,707.20 = 231,642.40 : x
  2. Step 2: Convert to fraction form
    371,804.80/557,707.20 = 231,642.40/x
  3. Step 3: Cross multiply
    371,804.80x = 557,707.20 × 231,642.40
  4. Step 4: Simplify right side
    371,804.80x = 129,188,634,305.28
  5. Step 5: Solve for x
    x = 129,188,634,305.28/371,804.80
  6. Step 6: Final answer
    x = 347,463.60

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Similar ratio
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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.