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Finding the Fourth Proportional to 296,999.70, 445,499.55 and 163,811.40

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Solution

The fourth proportional to 296,999.70, 445,499.55 and 163,811.40 is: 245,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,999.70 : 445,499.55 = 163,811.40 : x
  2. Step 2: Convert to fraction form
    296,999.70/445,499.55 = 163,811.40/x
  3. Step 3: Cross multiply
    296,999.70x = 445,499.55 × 163,811.40
  4. Step 4: Simplify right side
    296,999.70x = 72,977,904,984.87
  5. Step 5: Solve for x
    x = 72,977,904,984.87/296,999.70
  6. Step 6: Final answer
    x = 245,717.10

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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.