Home / 280,725.75-387,401.54-153,401.04

Finding the Fourth Proportional to 280,725.75, 387,401.54 and 153,401.04

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Solution

The fourth proportional to 280,725.75, 387,401.54 and 153,401.04 is: 211,693.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,725.75 : 387,401.54 = 153,401.04 : x
  2. Step 2: Convert to fraction form
    280,725.75/387,401.54 = 153,401.04/x
  3. Step 3: Cross multiply
    280,725.75x = 387,401.54 × 153,401.04
  4. Step 4: Simplify right side
    280,725.75x = 59,427,798,366.60
  5. Step 5: Solve for x
    x = 59,427,798,366.60/280,725.75
  6. Step 6: Final answer
    x = 211,693.44

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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.