Home / 280,407.09-386,950.86-153,083.73

Finding the Fourth Proportional to 280,407.09, 386,950.86 and 153,083.73

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Solution

The fourth proportional to 280,407.09, 386,950.86 and 153,083.73 is: 211,249.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,407.09 : 386,950.86 = 153,083.73 : x
  2. Step 2: Convert to fraction form
    280,407.09/386,950.86 = 153,083.73/x
  3. Step 3: Cross multiply
    280,407.09x = 386,950.86 × 153,083.73
  4. Step 4: Simplify right side
    280,407.09x = 59,235,880,975.51
  5. Step 5: Solve for x
    x = 59,235,880,975.51/280,407.09
  6. Step 6: Final answer
    x = 211,249.58

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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.