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Finding the Fourth Proportional to 216,879,508.80, 325,317,189.60 and 53,117,985.60

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Solution

The fourth proportional to 216,879,508.80, 325,317,189.60 and 53,117,985.60 is: 79,676,470.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,879,508.80 : 325,317,189.60 = 53,117,985.60 : x
  2. Step 2: Convert to fraction form
    216,879,508.80/325,317,189.60 = 53,117,985.60/x
  3. Step 3: Cross multiply
    216,879,508.80x = 325,317,189.60 × 53,117,985.60
  4. Step 4: Simplify right side
    216,879,508.80x = 17,280,193,792,605,272
  5. Step 5: Solve for x
    x = 17,280,193,792,605,272/216,879,508.80
  6. Step 6: Final answer
    x = 79,676,470.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.