Home / 210,539.86-290,541.50-115,044.36

Finding the Fourth Proportional to 210,539.86, 290,541.50 and 115,044.36

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Solution

The fourth proportional to 210,539.86, 290,541.50 and 115,044.36 is: 158,759.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,539.86 : 290,541.50 = 115,044.36 : x
  2. Step 2: Convert to fraction form
    210,539.86/290,541.50 = 115,044.36/x
  3. Step 3: Cross multiply
    210,539.86x = 290,541.50 × 115,044.36
  4. Step 4: Simplify right side
    210,539.86x = 33,425,160,920.94
  5. Step 5: Solve for x
    x = 33,425,160,920.94/210,539.86
  6. Step 6: Final answer
    x = 158,759.30

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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.