Home / 309,489,261.50-427,707,968.93-253,646,603.74

Finding the Fourth Proportional to 309,489,261.50, 427,707,968.93 and 253,646,603.74

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Solution

The fourth proportional to 309,489,261.50, 427,707,968.93 and 253,646,603.74 is: 350,534,532.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,489,261.50 : 427,707,968.93 = 253,646,603.74 : x
  2. Step 2: Convert to fraction form
    309,489,261.50/427,707,968.93 = 253,646,603.74/x
  3. Step 3: Cross multiply
    309,489,261.50x = 427,707,968.93 × 253,646,603.74
  4. Step 4: Simplify right side
    309,489,261.50x = 108,486,673,711,627,952
  5. Step 5: Solve for x
    x = 108,486,673,711,627,952/309,489,261.50
  6. Step 6: Final answer
    x = 350,534,532.88

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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.