Home / 304,540,123.20-420,272,779.68-165,316,591.68

Finding the Fourth Proportional to 304,540,123.20, 420,272,779.68 and 165,316,591.68

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Solution

The fourth proportional to 304,540,123.20, 420,272,779.68 and 165,316,591.68 is: 228,140,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,540,123.20 : 420,272,779.68 = 165,316,591.68 : x
  2. Step 2: Convert to fraction form
    304,540,123.20/420,272,779.68 = 165,316,591.68/x
  3. Step 3: Cross multiply
    304,540,123.20x = 420,272,779.68 × 165,316,591.68
  4. Step 4: Simplify right side
    304,540,123.20x = 69,478,063,512,577,168
  5. Step 5: Solve for x
    x = 69,478,063,512,577,168/304,540,123.20
  6. Step 6: Final answer
    x = 228,140,918.78

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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.