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Finding the Fourth Proportional to 315,605.18, 435,535.64 and 179,639.13

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Solution

The fourth proportional to 315,605.18, 435,535.64 and 179,639.13 is: 247,902.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,605.18 : 435,535.64 = 179,639.13 : x
  2. Step 2: Convert to fraction form
    315,605.18/435,535.64 = 179,639.13/x
  3. Step 3: Cross multiply
    315,605.18x = 435,535.64 × 179,639.13
  4. Step 4: Simplify right side
    315,605.18x = 78,239,242,555.40
  5. Step 5: Solve for x
    x = 78,239,242,555.40/315,605.18
  6. Step 6: Final answer
    x = 247,902.28

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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.