Home / 261,258.21-391,831.56-83,717.55

Finding the Fourth Proportional to 261,258.21, 391,831.56 and 83,717.55

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Solution

The fourth proportional to 261,258.21, 391,831.56 and 83,717.55 is: 125,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,258.21 : 391,831.56 = 83,717.55 : x
  2. Step 2: Convert to fraction form
    261,258.21/391,831.56 = 83,717.55/x
  3. Step 3: Cross multiply
    261,258.21x = 391,831.56 × 83,717.55
  4. Step 4: Simplify right side
    261,258.21x = 32,803,178,215.88
  5. Step 5: Solve for x
    x = 32,803,178,215.88/261,258.21
  6. Step 6: Final answer
    x = 125,558.46

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1.5x scale

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.