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Finding the Fourth Proportional to 219,378.87, 302,690.79 and 127,443.45

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Solution

The fourth proportional to 219,378.87, 302,690.79 and 127,443.45 is: 175,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,378.87 : 302,690.79 = 127,443.45 : x
  2. Step 2: Convert to fraction form
    219,378.87/302,690.79 = 127,443.45/x
  3. Step 3: Cross multiply
    219,378.87x = 302,690.79 × 127,443.45
  4. Step 4: Simplify right side
    219,378.87x = 38,575,958,560.83
  5. Step 5: Solve for x
    x = 38,575,958,560.83/219,378.87
  6. Step 6: Final answer
    x = 175,841.72

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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.