Home / 258,831.40-388,302.30-146,564.20

Finding the Fourth Proportional to 258,831.40, 388,302.30 and 146,564.20

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Solution

The fourth proportional to 258,831.40, 388,302.30 and 146,564.20 is: 219,877.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,831.40 : 388,302.30 = 146,564.20 : x
  2. Step 2: Convert to fraction form
    258,831.40/388,302.30 = 146,564.20/x
  3. Step 3: Cross multiply
    258,831.40x = 388,302.30 × 146,564.20
  4. Step 4: Simplify right side
    258,831.40x = 56,911,215,957.66
  5. Step 5: Solve for x
    x = 56,911,215,957.66/258,831.40
  6. Step 6: Final answer
    x = 219,877.56

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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.