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Finding the Fourth Proportional to 299,559,987.60, 449,339,981.40 and 248,499,661.20

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Solution

The fourth proportional to 299,559,987.60, 449,339,981.40 and 248,499,661.20 is: 372,749,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,559,987.60 : 449,339,981.40 = 248,499,661.20 : x
  2. Step 2: Convert to fraction form
    299,559,987.60/449,339,981.40 = 248,499,661.20/x
  3. Step 3: Cross multiply
    299,559,987.60x = 449,339,981.40 × 248,499,661.20
  4. Step 4: Simplify right side
    299,559,987.60x = 111,660,833,141,514,288
  5. Step 5: Solve for x
    x = 111,660,833,141,514,288/299,559,987.60
  6. Step 6: Final answer
    x = 372,749,491.80

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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.