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Finding the Fourth Proportional to 260,018.70, 390,028.05 and 102,194.70

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Solution

The fourth proportional to 260,018.70, 390,028.05 and 102,194.70 is: 153,292.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,018.70 : 390,028.05 = 102,194.70 : x
  2. Step 2: Convert to fraction form
    260,018.70/390,028.05 = 102,194.70/x
  3. Step 3: Cross multiply
    260,018.70x = 390,028.05 × 102,194.70
  4. Step 4: Simplify right side
    260,018.70x = 39,858,799,561.34
  5. Step 5: Solve for x
    x = 39,858,799,561.34/260,018.70
  6. Step 6: Final answer
    x = 153,292.05

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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.