Home / 661,396.51-991,988.47-181,512.19

Finding the Fourth Proportional to 661,396.51, 991,988.47 and 181,512.19

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Solution

The fourth proportional to 661,396.51, 991,988.47 and 181,512.19 is: 272,239.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,396.51 : 991,988.47 = 181,512.19 : x
  2. Step 2: Convert to fraction form
    661,396.51/991,988.47 = 181,512.19/x
  3. Step 3: Cross multiply
    661,396.51x = 991,988.47 × 181,512.19
  4. Step 4: Simplify right side
    661,396.51x = 180,057,999,644.45
  5. Step 5: Solve for x
    x = 180,057,999,644.45/661,396.51
  6. Step 6: Final answer
    x = 272,239.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.