Home / 280,684.74-387,340.38-153,357.60

Finding the Fourth Proportional to 280,684.74, 387,340.38 and 153,357.60

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Solution

The fourth proportional to 280,684.74, 387,340.38 and 153,357.60 is: 211,631.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,684.74 : 387,340.38 = 153,357.60 : x
  2. Step 2: Convert to fraction form
    280,684.74/387,340.38 = 153,357.60/x
  3. Step 3: Cross multiply
    280,684.74x = 387,340.38 × 153,357.60
  4. Step 4: Simplify right side
    280,684.74x = 59,401,591,059.89
  5. Step 5: Solve for x
    x = 59,401,591,059.89/280,684.74
  6. Step 6: Final answer
    x = 211,631.00

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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.