Home / 209,456.55-289,071.45-123,442.29

Finding the Fourth Proportional to 209,456.55, 289,071.45 and 123,442.29

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Solution

The fourth proportional to 209,456.55, 289,071.45 and 123,442.29 is: 170,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,456.55 : 289,071.45 = 123,442.29 : x
  2. Step 2: Convert to fraction form
    209,456.55/289,071.45 = 123,442.29/x
  3. Step 3: Cross multiply
    209,456.55x = 289,071.45 × 123,442.29
  4. Step 4: Simplify right side
    209,456.55x = 35,683,641,761.62
  5. Step 5: Solve for x
    x = 35,683,641,761.62/209,456.55
  6. Step 6: Final answer
    x = 170,362.98

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1.5x scale

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.