Home / 388,767,840-536,510,816.64-214,938,781.44

Finding the Fourth Proportional to 388,767,840, 536,510,816.64 and 214,938,781.44

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Solution

The fourth proportional to 388,767,840, 536,510,816.64 and 214,938,781.44 is: 296,621,709.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,767,840 : 536,510,816.64 = 214,938,781.44 : x
  2. Step 2: Convert to fraction form
    388,767,840/536,510,816.64 = 214,938,781.44/x
  3. Step 3: Cross multiply
    388,767,840x = 536,510,816.64 × 214,938,781.44
  4. Step 4: Simplify right side
    388,767,840x = 115,316,981,157,980,864
  5. Step 5: Solve for x
    x = 115,316,981,157,980,864/388,767,840
  6. Step 6: Final answer
    x = 296,621,709.14

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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.