Home / 219,577.14-302,905.17-138,868.74

Finding the Fourth Proportional to 219,577.14, 302,905.17 and 138,868.74

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Solution

The fourth proportional to 219,577.14, 302,905.17 and 138,868.74 is: 191,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,577.14 : 302,905.17 = 138,868.74 : x
  2. Step 2: Convert to fraction form
    219,577.14/302,905.17 = 138,868.74/x
  3. Step 3: Cross multiply
    219,577.14x = 302,905.17 × 138,868.74
  4. Step 4: Simplify right side
    219,577.14x = 42,064,059,297.39
  5. Step 5: Solve for x
    x = 42,064,059,297.39/219,577.14
  6. Step 6: Final answer
    x = 191,568.48

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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.