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Finding the Fourth Proportional to 268,450.70, 402,678.47 and 81,462.20

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Solution

The fourth proportional to 268,450.70, 402,678.47 and 81,462.20 is: 122,194.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,450.70 : 402,678.47 = 81,462.20 : x
  2. Step 2: Convert to fraction form
    268,450.70/402,678.47 = 81,462.20/x
  3. Step 3: Cross multiply
    268,450.70x = 402,678.47 × 81,462.20
  4. Step 4: Simplify right side
    268,450.70x = 32,803,071,638.13
  5. Step 5: Solve for x
    x = 32,803,071,638.13/268,450.70
  6. Step 6: Final answer
    x = 122,194.03

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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.