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Finding the Fourth Proportional to 302,937.70, 455,390.70 and 259,635.10

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Solution

The fourth proportional to 302,937.70, 455,390.70 and 259,635.10 is: 390,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,937.70 : 455,390.70 = 259,635.10 : x
  2. Step 2: Convert to fraction form
    302,937.70/455,390.70 = 259,635.10/x
  3. Step 3: Cross multiply
    302,937.70x = 455,390.70 × 259,635.10
  4. Step 4: Simplify right side
    302,937.70x = 118,235,409,933.57
  5. Step 5: Solve for x
    x = 118,235,409,933.57/302,937.70
  6. Step 6: Final answer
    x = 390,296.12

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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.