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Finding the Fourth Proportional to 355,358.59, 490,347.60 and 228,206.41

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Solution

The fourth proportional to 355,358.59, 490,347.60 and 228,206.41 is: 314,894.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,358.59 : 490,347.60 = 228,206.41 : x
  2. Step 2: Convert to fraction form
    355,358.59/490,347.60 = 228,206.41/x
  3. Step 3: Cross multiply
    355,358.59x = 490,347.60 × 228,206.41
  4. Step 4: Simplify right side
    355,358.59x = 111,900,465,448.12
  5. Step 5: Solve for x
    x = 111,900,465,448.12/355,358.59
  6. Step 6: Final answer
    x = 314,894.50

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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.