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Finding the Fourth Proportional to 268,021.22, 402,018.63 and 99,574.34

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Solution

The fourth proportional to 268,021.22, 402,018.63 and 99,574.34 is: 149,356.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,021.22 : 402,018.63 = 99,574.34 : x
  2. Step 2: Convert to fraction form
    268,021.22/402,018.63 = 99,574.34/x
  3. Step 3: Cross multiply
    268,021.22x = 402,018.63 × 99,574.34
  4. Step 4: Simplify right side
    268,021.22x = 40,030,739,749.95
  5. Step 5: Solve for x
    x = 40,030,739,749.95/268,021.22
  6. Step 6: Final answer
    x = 149,356.61

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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.