Home / 280,900.08-387,642.04-153,575.64

Finding the Fourth Proportional to 280,900.08, 387,642.04 and 153,575.64

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Solution

The fourth proportional to 280,900.08, 387,642.04 and 153,575.64 is: 211,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,900.08 : 387,642.04 = 153,575.64 : x
  2. Step 2: Convert to fraction form
    280,900.08/387,642.04 = 153,575.64/x
  3. Step 3: Cross multiply
    280,900.08x = 387,642.04 × 153,575.64
  4. Step 4: Simplify right side
    280,900.08x = 59,532,374,383.91
  5. Step 5: Solve for x
    x = 59,532,374,383.91/280,900.08
  6. Step 6: Final answer
    x = 211,934.34

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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.