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Finding the Fourth Proportional to 209,953,905.20, 314,930,857.80 and 202,301,154.80

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Solution

The fourth proportional to 209,953,905.20, 314,930,857.80 and 202,301,154.80 is: 303,451,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,953,905.20 : 314,930,857.80 = 202,301,154.80 : x
  2. Step 2: Convert to fraction form
    209,953,905.20/314,930,857.80 = 202,301,154.80/x
  3. Step 3: Cross multiply
    209,953,905.20x = 314,930,857.80 × 202,301,154.80
  4. Step 4: Simplify right side
    209,953,905.20x = 63,710,876,215,094,592
  5. Step 5: Solve for x
    x = 63,710,876,215,094,592/209,953,905.20
  6. Step 6: Final answer
    x = 303,451,732.20

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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.