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Finding the Fourth Proportional to 199,291,246.90, 298,936,870.35 and 91,585,870.90

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Solution

The fourth proportional to 199,291,246.90, 298,936,870.35 and 91,585,870.90 is: 137,378,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,291,246.90 : 298,936,870.35 = 91,585,870.90 : x
  2. Step 2: Convert to fraction form
    199,291,246.90/298,936,870.35 = 91,585,870.90/x
  3. Step 3: Cross multiply
    199,291,246.90x = 298,936,870.35 × 91,585,870.90
  4. Step 4: Simplify right side
    199,291,246.90x = 27,378,393,615,125,140
  5. Step 5: Solve for x
    x = 27,378,393,615,125,140/199,291,246.90
  6. Step 6: Final answer
    x = 137,378,806.35

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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.