Home / 258,390,887.12-387,430,217.64-102,968,605.52

Finding the Fourth Proportional to 258,390,887.12, 387,430,217.64 and 102,968,605.52

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Solution

The fourth proportional to 258,390,887.12, 387,430,217.64 and 102,968,605.52 is: 154,390,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,390,887.12 : 387,430,217.64 = 102,968,605.52 : x
  2. Step 2: Convert to fraction form
    258,390,887.12/387,430,217.64 = 102,968,605.52/x
  3. Step 3: Cross multiply
    258,390,887.12x = 387,430,217.64 × 102,968,605.52
  4. Step 4: Simplify right side
    258,390,887.12x = 39,893,149,246,700,904
  5. Step 5: Solve for x
    x = 39,893,149,246,700,904/258,390,887.12
  6. Step 6: Final answer
    x = 154,390,697.33

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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.