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Finding the Fourth Proportional to 254,803.80, 382,205.70 and 77,302.20

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Solution

The fourth proportional to 254,803.80, 382,205.70 and 77,302.20 is: 115,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,803.80 : 382,205.70 = 77,302.20 : x
  2. Step 2: Convert to fraction form
    254,803.80/382,205.70 = 77,302.20/x
  3. Step 3: Cross multiply
    254,803.80x = 382,205.70 × 77,302.20
  4. Step 4: Simplify right side
    254,803.80x = 29,545,341,462.54
  5. Step 5: Solve for x
    x = 29,545,341,462.54/254,803.80
  6. Step 6: Final answer
    x = 115,953.30

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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.