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Finding the Fourth Proportional to 259,264.62, 388,894.23 and 72,275.58

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Solution

The fourth proportional to 259,264.62, 388,894.23 and 72,275.58 is: 108,412.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,264.62 : 388,894.23 = 72,275.58 : x
  2. Step 2: Convert to fraction form
    259,264.62/388,894.23 = 72,275.58/x
  3. Step 3: Cross multiply
    259,264.62x = 388,894.23 × 72,275.58
  4. Step 4: Simplify right side
    259,264.62x = 28,107,556,031.90
  5. Step 5: Solve for x
    x = 28,107,556,031.90/259,264.62
  6. Step 6: Final answer
    x = 108,412.62

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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.