Home / 309,929.44-427,669.76-173,978.36

Finding the Fourth Proportional to 309,929.44, 427,669.76 and 173,978.36

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Solution

The fourth proportional to 309,929.44, 427,669.76 and 173,978.36 is: 240,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,929.44 : 427,669.76 = 173,978.36 : x
  2. Step 2: Convert to fraction form
    309,929.44/427,669.76 = 173,978.36/x
  3. Step 3: Cross multiply
    309,929.44x = 427,669.76 × 173,978.36
  4. Step 4: Simplify right side
    309,929.44x = 74,405,282,596.50
  5. Step 5: Solve for x
    x = 74,405,282,596.50/309,929.44
  6. Step 6: Final answer
    x = 240,071.69

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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.