Home / 387,721,297.20-535,054,656.24-211,509,246

Finding the Fourth Proportional to 387,721,297.20, 535,054,656.24 and 211,509,246

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Solution

The fourth proportional to 387,721,297.20, 535,054,656.24 and 211,509,246 is: 291,882,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,721,297.20 : 535,054,656.24 = 211,509,246 : x
  2. Step 2: Convert to fraction form
    387,721,297.20/535,054,656.24 = 211,509,246/x
  3. Step 3: Cross multiply
    387,721,297.20x = 535,054,656.24 × 211,509,246
  4. Step 4: Simplify right side
    387,721,297.20x = 113,169,006,910,111,600
  5. Step 5: Solve for x
    x = 113,169,006,910,111,600/387,721,297.20
  6. Step 6: Final answer
    x = 291,882,359.13

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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.