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Finding the Fourth Proportional to 315,901.02, 435,928.37 and 172,661.19

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Solution

The fourth proportional to 315,901.02, 435,928.37 and 172,661.19 is: 238,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,901.02 : 435,928.37 = 172,661.19 : x
  2. Step 2: Convert to fraction form
    315,901.02/435,928.37 = 172,661.19/x
  3. Step 3: Cross multiply
    315,901.02x = 435,928.37 × 172,661.19
  4. Step 4: Simplify right side
    315,901.02x = 75,267,910,255.65
  5. Step 5: Solve for x
    x = 75,267,910,255.65/315,901.02
  6. Step 6: Final answer
    x = 238,264.22

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.