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Finding the Fourth Proportional to 301,538,008.80, 421,292,277.90 and 301,538,008.80

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Solution

The fourth proportional to 301,538,008.80, 421,292,277.90 and 301,538,008.80 is: 421,292,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,538,008.80 : 421,292,277.90 = 301,538,008.80 : x
  2. Step 2: Convert to fraction form
    301,538,008.80/421,292,277.90 = 301,538,008.80/x
  3. Step 3: Cross multiply
    301,538,008.80x = 421,292,277.90 × 301,538,008.80
  4. Step 4: Simplify right side
    301,538,008.80x = 127,035,634,600,782,240
  5. Step 5: Solve for x
    x = 127,035,634,600,782,240/301,538,008.80
  6. Step 6: Final answer
    x = 421,292,277.90

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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.