Home / 309,489,263.50-427,707,971.69-253,646,605.74

Finding the Fourth Proportional to 309,489,263.50, 427,707,971.69 and 253,646,605.74

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Solution

The fourth proportional to 309,489,263.50, 427,707,971.69 and 253,646,605.74 is: 350,534,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,489,263.50 : 427,707,971.69 = 253,646,605.74 : x
  2. Step 2: Convert to fraction form
    309,489,263.50/427,707,971.69 = 253,646,605.74/x
  3. Step 3: Cross multiply
    309,489,263.50x = 427,707,971.69 × 253,646,605.74
  4. Step 4: Simplify right side
    309,489,263.50x = 108,486,675,267,108,512
  5. Step 5: Solve for x
    x = 108,486,675,267,108,512/309,489,263.50
  6. Step 6: Final answer
    x = 350,534,535.64

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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.