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Finding the Fourth Proportional to 219,431.64, 302,729.91 and 127,535.64

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Solution

The fourth proportional to 219,431.64, 302,729.91 and 127,535.64 is: 175,949.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,431.64 : 302,729.91 = 127,535.64 : x
  2. Step 2: Convert to fraction form
    219,431.64/302,729.91 = 127,535.64/x
  3. Step 3: Cross multiply
    219,431.64x = 302,729.91 × 127,535.64
  4. Step 4: Simplify right side
    219,431.64x = 38,608,852,818.99
  5. Step 5: Solve for x
    x = 38,608,852,818.99/219,431.64
  6. Step 6: Final answer
    x = 175,949.34

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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.