Home / 210,733.02-290,617.47-138,109.46

Finding the Fourth Proportional to 210,733.02, 290,617.47 and 138,109.46

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Solution

The fourth proportional to 210,733.02, 290,617.47 and 138,109.46 is: 190,463.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,733.02 : 290,617.47 = 138,109.46 : x
  2. Step 2: Convert to fraction form
    210,733.02/290,617.47 = 138,109.46/x
  3. Step 3: Cross multiply
    210,733.02x = 290,617.47 × 138,109.46
  4. Step 4: Simplify right side
    210,733.02x = 40,137,021,121.72
  5. Step 5: Solve for x
    x = 40,137,021,121.72/210,733.02
  6. Step 6: Final answer
    x = 190,463.84

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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.