Home / 219,580.14-302,909.31-138,871.74

Finding the Fourth Proportional to 219,580.14, 302,909.31 and 138,871.74

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Solution

The fourth proportional to 219,580.14, 302,909.31 and 138,871.74 is: 191,572.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,580.14 : 302,909.31 = 138,871.74 : x
  2. Step 2: Convert to fraction form
    219,580.14/302,909.31 = 138,871.74/x
  3. Step 3: Cross multiply
    219,580.14x = 302,909.31 × 138,871.74
  4. Step 4: Simplify right side
    219,580.14x = 42,065,542,941.90
  5. Step 5: Solve for x
    x = 42,065,542,941.90/219,580.14
  6. Step 6: Final answer
    x = 191,572.62

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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.