Home / 280,518.51-387,116.96-153,194.10

Finding the Fourth Proportional to 280,518.51, 387,116.96 and 153,194.10

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Solution

The fourth proportional to 280,518.51, 387,116.96 and 153,194.10 is: 211,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,518.51 : 387,116.96 = 153,194.10 : x
  2. Step 2: Convert to fraction form
    280,518.51/387,116.96 = 153,194.10/x
  3. Step 3: Cross multiply
    280,518.51x = 387,116.96 × 153,194.10
  4. Step 4: Simplify right side
    280,518.51x = 59,304,032,346.35
  5. Step 5: Solve for x
    x = 59,304,032,346.35/280,518.51
  6. Step 6: Final answer
    x = 211,408.63

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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.