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Finding the Fourth Proportional to 248,196.34, 342,859.80 and 221,330.26

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Solution

The fourth proportional to 248,196.34, 342,859.80 and 221,330.26 is: 305,746.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,196.34 : 342,859.80 = 221,330.26 : x
  2. Step 2: Convert to fraction form
    248,196.34/342,859.80 = 221,330.26/x
  3. Step 3: Cross multiply
    248,196.34x = 342,859.80 × 221,330.26
  4. Step 4: Simplify right side
    248,196.34x = 75,885,248,677.55
  5. Step 5: Solve for x
    x = 75,885,248,677.55/248,196.34
  6. Step 6: Final answer
    x = 305,746.85

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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.