Home / 280,616.96-387,245.04-153,293.12

Finding the Fourth Proportional to 280,616.96, 387,245.04 and 153,293.12

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Solution

The fourth proportional to 280,616.96, 387,245.04 and 153,293.12 is: 211,541.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,616.96 : 387,245.04 = 153,293.12 : x
  2. Step 2: Convert to fraction form
    280,616.96/387,245.04 = 153,293.12/x
  3. Step 3: Cross multiply
    280,616.96x = 387,245.04 × 153,293.12
  4. Step 4: Simplify right side
    280,616.96x = 59,362,000,386.12
  5. Step 5: Solve for x
    x = 59,362,000,386.12/280,616.96
  6. Step 6: Final answer
    x = 211,541.03

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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.