Home / 281,111.15-387,942.51-153,786.74

Finding the Fourth Proportional to 281,111.15, 387,942.51 and 153,786.74

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Solution

The fourth proportional to 281,111.15, 387,942.51 and 153,786.74 is: 212,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,111.15 : 387,942.51 = 153,786.74 : x
  2. Step 2: Convert to fraction form
    281,111.15/387,942.51 = 153,786.74/x
  3. Step 3: Cross multiply
    281,111.15x = 387,942.51 × 153,786.74
  4. Step 4: Simplify right side
    281,111.15x = 59,660,411,980.60
  5. Step 5: Solve for x
    x = 59,660,411,980.60/281,111.15
  6. Step 6: Final answer
    x = 212,230.69

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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.