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Finding the Fourth Proportional to 219,281.27, 302,524.79 and 137,574.90

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Solution

The fourth proportional to 219,281.27, 302,524.79 and 137,574.90 is: 189,801.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,281.27 : 302,524.79 = 137,574.90 : x
  2. Step 2: Convert to fraction form
    219,281.27/302,524.79 = 137,574.90/x
  3. Step 3: Cross multiply
    219,281.27x = 302,524.79 × 137,574.90
  4. Step 4: Simplify right side
    219,281.27x = 41,619,817,043.90
  5. Step 5: Solve for x
    x = 41,619,817,043.90/219,281.27
  6. Step 6: Final answer
    x = 189,801.06

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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.