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Finding the Fourth Proportional to 305,778,301.20, 429,298,945.20 and 305,778,301.20

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Solution

The fourth proportional to 305,778,301.20, 429,298,945.20 and 305,778,301.20 is: 429,298,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,778,301.20 : 429,298,945.20 = 305,778,301.20 : x
  2. Step 2: Convert to fraction form
    305,778,301.20/429,298,945.20 = 305,778,301.20/x
  3. Step 3: Cross multiply
    305,778,301.20x = 429,298,945.20 × 305,778,301.20
  4. Step 4: Simplify right side
    305,778,301.20x = 131,270,302,170,207,888
  5. Step 5: Solve for x
    x = 131,270,302,170,207,888/305,778,301.20
  6. Step 6: Final answer
    x = 429,298,945.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.