Home / 387,864,972.66-535,265,019.81-211,664,322.12

Finding the Fourth Proportional to 387,864,972.66, 535,265,019.81 and 211,664,322.12

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Solution

The fourth proportional to 387,864,972.66, 535,265,019.81 and 211,664,322.12 is: 292,102,962.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,864,972.66 : 535,265,019.81 = 211,664,322.12 : x
  2. Step 2: Convert to fraction form
    387,864,972.66/535,265,019.81 = 211,664,322.12/x
  3. Step 3: Cross multiply
    387,864,972.66x = 535,265,019.81 × 211,664,322.12
  4. Step 4: Simplify right side
    387,864,972.66x = 113,296,507,572,632,032
  5. Step 5: Solve for x
    x = 113,296,507,572,632,032/387,864,972.66
  6. Step 6: Final answer
    x = 292,102,962.52

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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.