Home / 315,949.77-436,010.76-172,710.45

Finding the Fourth Proportional to 315,949.77, 436,010.76 and 172,710.45

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Solution

The fourth proportional to 315,949.77, 436,010.76 and 172,710.45 is: 238,340.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,949.77 : 436,010.76 = 172,710.45 : x
  2. Step 2: Convert to fraction form
    315,949.77/436,010.76 = 172,710.45/x
  3. Step 3: Cross multiply
    315,949.77x = 436,010.76 × 172,710.45
  4. Step 4: Simplify right side
    315,949.77x = 75,303,614,564.44
  5. Step 5: Solve for x
    x = 75,303,614,564.44/315,949.77
  6. Step 6: Final answer
    x = 238,340.46

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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.