Home / 210,640.24-290,689.86-115,152.04

Finding the Fourth Proportional to 210,640.24, 290,689.86 and 115,152.04

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Solution

The fourth proportional to 210,640.24, 290,689.86 and 115,152.04 is: 158,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,640.24 : 290,689.86 = 115,152.04 : x
  2. Step 2: Convert to fraction form
    210,640.24/290,689.86 = 115,152.04/x
  3. Step 3: Cross multiply
    210,640.24x = 290,689.86 × 115,152.04
  4. Step 4: Simplify right side
    210,640.24x = 33,473,530,386.31
  5. Step 5: Solve for x
    x = 33,473,530,386.31/210,640.24
  6. Step 6: Final answer
    x = 158,913.28

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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.