Home / 280,390.14-386,945.01-153,066.60

Finding the Fourth Proportional to 280,390.14, 386,945.01 and 153,066.60

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Solution

The fourth proportional to 280,390.14, 386,945.01 and 153,066.60 is: 211,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,390.14 : 386,945.01 = 153,066.60 : x
  2. Step 2: Convert to fraction form
    280,390.14/386,945.01 = 153,066.60/x
  3. Step 3: Cross multiply
    280,390.14x = 386,945.01 × 153,066.60
  4. Step 4: Simplify right side
    280,390.14x = 59,228,357,067.67
  5. Step 5: Solve for x
    x = 59,228,357,067.67/280,390.14
  6. Step 6: Final answer
    x = 211,235.52

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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.