Home / 386,243.02-579,390.45-133,548.13

Finding the Fourth Proportional to 386,243.02, 579,390.45 and 133,548.13

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Solution

The fourth proportional to 386,243.02, 579,390.45 and 133,548.13 is: 200,331.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,243.02 : 579,390.45 = 133,548.13 : x
  2. Step 2: Convert to fraction form
    386,243.02/579,390.45 = 133,548.13/x
  3. Step 3: Cross multiply
    386,243.02x = 579,390.45 × 133,548.13
  4. Step 4: Simplify right side
    386,243.02x = 77,376,511,137.36
  5. Step 5: Solve for x
    x = 77,376,511,137.36/386,243.02
  6. Step 6: Final answer
    x = 200,331.16

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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.