Home / 386,139.90-579,194.06-161,442.66

Finding the Fourth Proportional to 386,139.90, 579,194.06 and 161,442.66

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Solution

The fourth proportional to 386,139.90, 579,194.06 and 161,442.66 is: 242,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,139.90 : 579,194.06 = 161,442.66 : x
  2. Step 2: Convert to fraction form
    386,139.90/579,194.06 = 161,442.66/x
  3. Step 3: Cross multiply
    386,139.90x = 579,194.06 × 161,442.66
  4. Step 4: Simplify right side
    386,139.90x = 93,506,628,895.39
  5. Step 5: Solve for x
    x = 93,506,628,895.39/386,139.90
  6. Step 6: Final answer
    x = 242,157.39

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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.