Home / 210,822.21-290,935.53-115,330.50

Finding the Fourth Proportional to 210,822.21, 290,935.53 and 115,330.50

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Solution

The fourth proportional to 210,822.21, 290,935.53 and 115,330.50 is: 159,156.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,822.21 : 290,935.53 = 115,330.50 : x
  2. Step 2: Convert to fraction form
    210,822.21/290,935.53 = 115,330.50/x
  3. Step 3: Cross multiply
    210,822.21x = 290,935.53 × 115,330.50
  4. Step 4: Simplify right side
    210,822.21x = 33,553,740,142.67
  5. Step 5: Solve for x
    x = 33,553,740,142.67/210,822.21
  6. Step 6: Final answer
    x = 159,156.57

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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.