Home / 258,867,686.40-388,301,529.60-218,053,017.60

Finding the Fourth Proportional to 258,867,686.40, 388,301,529.60 and 218,053,017.60

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Solution

The fourth proportional to 258,867,686.40, 388,301,529.60 and 218,053,017.60 is: 327,079,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,867,686.40 : 388,301,529.60 = 218,053,017.60 : x
  2. Step 2: Convert to fraction form
    258,867,686.40/388,301,529.60 = 218,053,017.60/x
  3. Step 3: Cross multiply
    258,867,686.40x = 388,301,529.60 × 218,053,017.60
  4. Step 4: Simplify right side
    258,867,686.40x = 84,670,320,267,975,728
  5. Step 5: Solve for x
    x = 84,670,320,267,975,728/258,867,686.40
  6. Step 6: Final answer
    x = 327,079,526.40

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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.