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Finding the Fourth Proportional to 205,518,897.20, 308,278,345.80 and 205,518,897.20

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Solution

The fourth proportional to 205,518,897.20, 308,278,345.80 and 205,518,897.20 is: 308,278,345.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,518,897.20 : 308,278,345.80 = 205,518,897.20 : x
  2. Step 2: Convert to fraction form
    205,518,897.20/308,278,345.80 = 205,518,897.20/x
  3. Step 3: Cross multiply
    205,518,897.20x = 308,278,345.80 × 205,518,897.20
  4. Step 4: Simplify right side
    205,518,897.20x = 63,357,025,659,456,248
  5. Step 5: Solve for x
    x = 63,357,025,659,456,248/205,518,897.20
  6. Step 6: Final answer
    x = 308,278,345.80

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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.