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Finding the Fourth Proportional to 259,740.60, 389,610.90 and 101,887.80

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Solution

The fourth proportional to 259,740.60, 389,610.90 and 101,887.80 is: 152,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.60 : 389,610.90 = 101,887.80 : x
  2. Step 2: Convert to fraction form
    259,740.60/389,610.90 = 101,887.80/x
  3. Step 3: Cross multiply
    259,740.60x = 389,610.90 × 101,887.80
  4. Step 4: Simplify right side
    259,740.60x = 39,696,597,457.02
  5. Step 5: Solve for x
    x = 39,696,597,457.02/259,740.60
  6. Step 6: Final answer
    x = 152,831.70

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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.