Home / 454,444.20-681,698.70-138,900.60

Finding the Fourth Proportional to 454,444.20, 681,698.70 and 138,900.60

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Solution

The fourth proportional to 454,444.20, 681,698.70 and 138,900.60 is: 208,360.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,444.20 : 681,698.70 = 138,900.60 : x
  2. Step 2: Convert to fraction form
    454,444.20/681,698.70 = 138,900.60/x
  3. Step 3: Cross multiply
    454,444.20x = 681,698.70 × 138,900.60
  4. Step 4: Simplify right side
    454,444.20x = 94,688,358,449.22
  5. Step 5: Solve for x
    x = 94,688,358,449.22/454,444.20
  6. Step 6: Final answer
    x = 208,360.80

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1.5x scale

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.