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Finding the Fourth Proportional to 355,262.95, 490,590.28 and 228,159.98

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Solution

The fourth proportional to 355,262.95, 490,590.28 and 228,159.98 is: 315,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,262.95 : 490,590.28 = 228,159.98 : x
  2. Step 2: Convert to fraction form
    355,262.95/490,590.28 = 228,159.98/x
  3. Step 3: Cross multiply
    355,262.95x = 490,590.28 × 228,159.98
  4. Step 4: Simplify right side
    355,262.95x = 111,933,068,472.99
  5. Step 5: Solve for x
    x = 111,933,068,472.99/355,262.95
  6. Step 6: Final answer
    x = 315,071.04

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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.