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Finding the Fourth Proportional to 354,326,812.10, 531,490,218.15 and 354,326,812.10

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Solution

The fourth proportional to 354,326,812.10, 531,490,218.15 and 354,326,812.10 is: 531,490,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,326,812.10 : 531,490,218.15 = 354,326,812.10 : x
  2. Step 2: Convert to fraction form
    354,326,812.10/531,490,218.15 = 354,326,812.10/x
  3. Step 3: Cross multiply
    354,326,812.10x = 531,490,218.15 × 354,326,812.10
  4. Step 4: Simplify right side
    354,326,812.10x = 188,321,234,659,423,072
  5. Step 5: Solve for x
    x = 188,321,234,659,423,072/354,326,812.10
  6. Step 6: Final answer
    x = 531,490,218.15

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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.