Home / 280,325.19-386,837.94-153,000.79

Finding the Fourth Proportional to 280,325.19, 386,837.94 and 153,000.79

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Solution

The fourth proportional to 280,325.19, 386,837.94 and 153,000.79 is: 211,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,325.19 : 386,837.94 = 153,000.79 : x
  2. Step 2: Convert to fraction form
    280,325.19/386,837.94 = 153,000.79/x
  3. Step 3: Cross multiply
    280,325.19x = 386,837.94 × 153,000.79
  4. Step 4: Simplify right side
    280,325.19x = 59,186,510,421.97
  5. Step 5: Solve for x
    x = 59,186,510,421.97/280,325.19
  6. Step 6: Final answer
    x = 211,135.18

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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.