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Finding the Fourth Proportional to 22,219,658.40, 31,128,779.40 and 22,219,658.40

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Solution

The fourth proportional to 22,219,658.40, 31,128,779.40 and 22,219,658.40 is: 31,128,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,219,658.40 : 31,128,779.40 = 22,219,658.40 : x
  2. Step 2: Convert to fraction form
    22,219,658.40/31,128,779.40 = 22,219,658.40/x
  3. Step 3: Cross multiply
    22,219,658.40x = 31,128,779.40 × 22,219,658.40
  4. Step 4: Simplify right side
    22,219,658.40x = 691,670,844,676,956.88
  5. Step 5: Solve for x
    x = 691,670,844,676,956.88/22,219,658.40
  6. Step 6: Final answer
    x = 31,128,779.40

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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.