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Finding the Fourth Proportional to 398,354,441.65, 549,729,659.04 and 219,734,300.77

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Solution

The fourth proportional to 398,354,441.65, 549,729,659.04 and 219,734,300.77 is: 303,233,627.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,354,441.65 : 549,729,659.04 = 219,734,300.77 : x
  2. Step 2: Convert to fraction form
    398,354,441.65/549,729,659.04 = 219,734,300.77/x
  3. Step 3: Cross multiply
    398,354,441.65x = 549,729,659.04 × 219,734,300.77
  4. Step 4: Simplify right side
    398,354,441.65x = 120,794,462,241,684,912
  5. Step 5: Solve for x
    x = 120,794,462,241,684,912/398,354,441.65
  6. Step 6: Final answer
    x = 303,233,627.17

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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.