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Finding the Fourth Proportional to 368,695,902.79, 508,800,549.99 and 199,150,139.76

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Solution

The fourth proportional to 368,695,902.79, 508,800,549.99 and 199,150,139.76 is: 274,827,303.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,695,902.79 : 508,800,549.99 = 199,150,139.76 : x
  2. Step 2: Convert to fraction form
    368,695,902.79/508,800,549.99 = 199,150,139.76/x
  3. Step 3: Cross multiply
    368,695,902.79x = 508,800,549.99 × 199,150,139.76
  4. Step 4: Simplify right side
    368,695,902.79x = 101,327,700,640,473,360
  5. Step 5: Solve for x
    x = 101,327,700,640,473,360/368,695,902.79
  6. Step 6: Final answer
    x = 274,827,303.13

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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.