Home / 258,871,315.46-388,308,424.81-86,347,655.33

Finding the Fourth Proportional to 258,871,315.46, 388,308,424.81 and 86,347,655.33

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Solution

The fourth proportional to 258,871,315.46, 388,308,424.81 and 86,347,655.33 is: 129,521,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,871,315.46 : 388,308,424.81 = 86,347,655.33 : x
  2. Step 2: Convert to fraction form
    258,871,315.46/388,308,424.81 = 86,347,655.33/x
  3. Step 3: Cross multiply
    258,871,315.46x = 388,308,424.81 × 86,347,655.33
  4. Step 4: Simplify right side
    258,871,315.46x = 33,529,522,027,013,232
  5. Step 5: Solve for x
    x = 33,529,522,027,013,232/258,871,315.46
  6. Step 6: Final answer
    x = 129,521,967.19

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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.