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Finding the Fourth Proportional to 228,409,695.76, 315,205,779.72 and 123,987,837.82

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Solution

The fourth proportional to 228,409,695.76, 315,205,779.72 and 123,987,837.82 is: 171,103,433.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409,695.76 : 315,205,779.72 = 123,987,837.82 : x
  2. Step 2: Convert to fraction form
    228,409,695.76/315,205,779.72 = 123,987,837.82/x
  3. Step 3: Cross multiply
    228,409,695.76x = 315,205,779.72 × 123,987,837.82
  4. Step 4: Simplify right side
    228,409,695.76x = 39,081,683,096,132,384
  5. Step 5: Solve for x
    x = 39,081,683,096,132,384/228,409,695.76
  6. Step 6: Final answer
    x = 171,103,433.09

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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.