Home / 219,015.79-328,521.75-69,256.21

Finding the Fourth Proportional to 219,015.79, 328,521.75 and 69,256.21

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Solution

The fourth proportional to 219,015.79, 328,521.75 and 69,256.21 is: 103,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,015.79 : 328,521.75 = 69,256.21 : x
  2. Step 2: Convert to fraction form
    219,015.79/328,521.75 = 69,256.21/x
  3. Step 3: Cross multiply
    219,015.79x = 328,521.75 × 69,256.21
  4. Step 4: Simplify right side
    219,015.79x = 22,752,171,307.57
  5. Step 5: Solve for x
    x = 22,752,171,307.57/219,015.79
  6. Step 6: Final answer
    x = 103,883.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.