Home / 388,471,588.83-536,074,840.17-212,265,633.06

Finding the Fourth Proportional to 388,471,588.83, 536,074,840.17 and 212,265,633.06

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Solution

The fourth proportional to 388,471,588.83, 536,074,840.17 and 212,265,633.06 is: 292,917,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,471,588.83 : 536,074,840.17 = 212,265,633.06 : x
  2. Step 2: Convert to fraction form
    388,471,588.83/536,074,840.17 = 212,265,633.06/x
  3. Step 3: Cross multiply
    388,471,588.83x = 536,074,840.17 × 212,265,633.06
  4. Step 4: Simplify right side
    388,471,588.83x = 113,790,265,316,223,376
  5. Step 5: Solve for x
    x = 113,790,265,316,223,376/388,471,588.83
  6. Step 6: Final answer
    x = 292,917,857.03

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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.