Home / 388,063,395.64-535,524,761.70-211,851,391.00

Finding the Fourth Proportional to 388,063,395.64, 535,524,761.70 and 211,851,391.00

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Solution

The fourth proportional to 388,063,395.64, 535,524,761.70 and 211,851,391.00 is: 292,353,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,063,395.64 : 535,524,761.70 = 211,851,391.00 : x
  2. Step 2: Convert to fraction form
    388,063,395.64/535,524,761.70 = 211,851,391.00/x
  3. Step 3: Cross multiply
    388,063,395.64x = 535,524,761.70 × 211,851,391.00
  4. Step 4: Simplify right side
    388,063,395.64x = 113,451,665,678,952,960
  5. Step 5: Solve for x
    x = 113,451,665,678,952,960/388,063,395.64
  6. Step 6: Final answer
    x = 292,353,432.33

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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.