Home / 210,865.89-290,994.75-115,372.98

Finding the Fourth Proportional to 210,865.89, 290,994.75 and 115,372.98

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Solution

The fourth proportional to 210,865.89, 290,994.75 and 115,372.98 is: 159,214.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,865.89 : 290,994.75 = 115,372.98 : x
  2. Step 2: Convert to fraction form
    210,865.89/290,994.75 = 115,372.98/x
  3. Step 3: Cross multiply
    210,865.89x = 290,994.75 × 115,372.98
  4. Step 4: Simplify right side
    210,865.89x = 33,572,931,471.86
  5. Step 5: Solve for x
    x = 33,572,931,471.86/210,865.89
  6. Step 6: Final answer
    x = 159,214.61

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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.