Home / 280,557.44-387,155.04-153,208.64

Finding the Fourth Proportional to 280,557.44, 387,155.04 and 153,208.64

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Solution

The fourth proportional to 280,557.44, 387,155.04 and 153,208.64 is: 211,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,557.44 : 387,155.04 = 153,208.64 : x
  2. Step 2: Convert to fraction form
    280,557.44/387,155.04 = 153,208.64/x
  3. Step 3: Cross multiply
    280,557.44x = 387,155.04 × 153,208.64
  4. Step 4: Simplify right side
    280,557.44x = 59,315,497,147.55
  5. Step 5: Solve for x
    x = 59,315,497,147.55/280,557.44
  6. Step 6: Final answer
    x = 211,420.15

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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.