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Finding the Fourth Proportional to 374,702,197.50, 517,143,146.76 and 215,901,918.12

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Solution

The fourth proportional to 374,702,197.50, 517,143,146.76 and 215,901,918.12 is: 297,975,827.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,702,197.50 : 517,143,146.76 = 215,901,918.12 : x
  2. Step 2: Convert to fraction form
    374,702,197.50/517,143,146.76 = 215,901,918.12/x
  3. Step 3: Cross multiply
    374,702,197.50x = 517,143,146.76 × 215,901,918.12
  4. Step 4: Simplify right side
    374,702,197.50x = 111,652,197,328,096,656
  5. Step 5: Solve for x
    x = 111,652,197,328,096,656/374,702,197.50
  6. Step 6: Final answer
    x = 297,975,827.40

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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.