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Finding the Fourth Proportional to 449,340.72, 620,095.12 and 245,397.64

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Solution

The fourth proportional to 449,340.72, 620,095.12 and 245,397.64 is: 338,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,340.72 : 620,095.12 = 245,397.64 : x
  2. Step 2: Convert to fraction form
    449,340.72/620,095.12 = 245,397.64/x
  3. Step 3: Cross multiply
    449,340.72x = 620,095.12 × 245,397.64
  4. Step 4: Simplify right side
    449,340.72x = 152,169,875,923.04
  5. Step 5: Solve for x
    x = 152,169,875,923.04/449,340.72
  6. Step 6: Final answer
    x = 338,651.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.