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Finding the Fourth Proportional to 219,378.89, 302,742.88 and 123,891.74

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Solution

The fourth proportional to 219,378.89, 302,742.88 and 123,891.74 is: 170,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,378.89 : 302,742.88 = 123,891.74 : x
  2. Step 2: Convert to fraction form
    219,378.89/302,742.88 = 123,891.74/x
  3. Step 3: Cross multiply
    219,378.89x = 302,742.88 × 123,891.74
  4. Step 4: Simplify right side
    219,378.89x = 37,507,340,662.10
  5. Step 5: Solve for x
    x = 37,507,340,662.10/219,378.89
  6. Step 6: Final answer
    x = 170,970.60

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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.