Home / 387,721,298.20-535,054,657.62-211,509,247

Finding the Fourth Proportional to 387,721,298.20, 535,054,657.62 and 211,509,247

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Solution

The fourth proportional to 387,721,298.20, 535,054,657.62 and 211,509,247 is: 291,882,360.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,721,298.20 : 535,054,657.62 = 211,509,247 : x
  2. Step 2: Convert to fraction form
    387,721,298.20/535,054,657.62 = 211,509,247/x
  3. Step 3: Cross multiply
    387,721,298.20x = 535,054,657.62 × 211,509,247
  4. Step 4: Simplify right side
    387,721,298.20x = 113,169,007,737,049,008
  5. Step 5: Solve for x
    x = 113,169,007,737,049,008/387,721,298.20
  6. Step 6: Final answer
    x = 291,882,360.51

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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.