Home / 355,320.80-489,772.88-240,563.36

Finding the Fourth Proportional to 355,320.80, 489,772.88 and 240,563.36

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Solution

The fourth proportional to 355,320.80, 489,772.88 and 240,563.36 is: 331,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,320.80 : 489,772.88 = 240,563.36 : x
  2. Step 2: Convert to fraction form
    355,320.80/489,772.88 = 240,563.36/x
  3. Step 3: Cross multiply
    355,320.80x = 489,772.88 × 240,563.36
  4. Step 4: Simplify right side
    355,320.80x = 117,821,409,649.68
  5. Step 5: Solve for x
    x = 117,821,409,649.68/355,320.80
  6. Step 6: Final answer
    x = 331,591.65

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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.