Home / 282,648.02-390,047.40-161,781.66

Finding the Fourth Proportional to 282,648.02, 390,047.40 and 161,781.66

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Solution

The fourth proportional to 282,648.02, 390,047.40 and 161,781.66 is: 223,254.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,648.02 : 390,047.40 = 161,781.66 : x
  2. Step 2: Convert to fraction form
    282,648.02/390,047.40 = 161,781.66/x
  3. Step 3: Cross multiply
    282,648.02x = 390,047.40 × 161,781.66
  4. Step 4: Simplify right side
    282,648.02x = 63,102,515,850.68
  5. Step 5: Solve for x
    x = 63,102,515,850.68/282,648.02
  6. Step 6: Final answer
    x = 223,254.76

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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.