Home / 258,871,534.32-388,308,753-86,347,874.28

Finding the Fourth Proportional to 258,871,534.32, 388,308,753 and 86,347,874.28

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Solution

The fourth proportional to 258,871,534.32, 388,308,753 and 86,347,874.28 is: 129,522,295.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,871,534.32 : 388,308,753 = 86,347,874.28 : x
  2. Step 2: Convert to fraction form
    258,871,534.32/388,308,753 = 86,347,874.28/x
  3. Step 3: Cross multiply
    258,871,534.32x = 388,308,753 × 86,347,874.28
  4. Step 4: Simplify right side
    258,871,534.32x = 33,529,635,385,867,572
  5. Step 5: Solve for x
    x = 33,529,635,385,867,572/258,871,534.32
  6. Step 6: Final answer
    x = 129,522,295.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.