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Finding the Fourth Proportional to 21,030,302.80, 29,484,939.20 and 21,030,302.80

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Solution

The fourth proportional to 21,030,302.80, 29,484,939.20 and 21,030,302.80 is: 29,484,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030,302.80 : 29,484,939.20 = 21,030,302.80 : x
  2. Step 2: Convert to fraction form
    21,030,302.80/29,484,939.20 = 21,030,302.80/x
  3. Step 3: Cross multiply
    21,030,302.80x = 29,484,939.20 × 21,030,302.80
  4. Step 4: Simplify right side
    21,030,302.80x = 620,077,199,415,589.75
  5. Step 5: Solve for x
    x = 620,077,199,415,589.75/21,030,302.80
  6. Step 6: Final answer
    x = 29,484,939.20

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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.