Home / 309,729,491.79-464,599,164.35-172,427,795.16

Finding the Fourth Proportional to 309,729,491.79, 464,599,164.35 and 172,427,795.16

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Solution

The fourth proportional to 309,729,491.79, 464,599,164.35 and 172,427,795.16 is: 258,644,435.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,729,491.79 : 464,599,164.35 = 172,427,795.16 : x
  2. Step 2: Convert to fraction form
    309,729,491.79/464,599,164.35 = 172,427,795.16/x
  3. Step 3: Cross multiply
    309,729,491.79x = 464,599,164.35 × 172,427,795.16
  4. Step 4: Simplify right side
    309,729,491.79x = 80,109,809,543,353,488
  5. Step 5: Solve for x
    x = 80,109,809,543,353,488/309,729,491.79
  6. Step 6: Final answer
    x = 258,644,435.44

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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.