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Finding the Fourth Proportional to 302,800.70, 455,185.20 and 259,498.10

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Solution

The fourth proportional to 302,800.70, 455,185.20 and 259,498.10 is: 390,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,800.70 : 455,185.20 = 259,498.10 : x
  2. Step 2: Convert to fraction form
    302,800.70/455,185.20 = 259,498.10/x
  3. Step 3: Cross multiply
    302,800.70x = 455,185.20 × 259,498.10
  4. Step 4: Simplify right side
    302,800.70x = 118,119,694,548.12
  5. Step 5: Solve for x
    x = 118,119,694,548.12/302,800.70
  6. Step 6: Final answer
    x = 390,090.56

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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.