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Finding the Fourth Proportional to 163,421.40, 245,102.92 and 43,479.04

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Solution

The fourth proportional to 163,421.40, 245,102.92 and 43,479.04 is: 65,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,421.40 : 245,102.92 = 43,479.04 : x
  2. Step 2: Convert to fraction form
    163,421.40/245,102.92 = 43,479.04/x
  3. Step 3: Cross multiply
    163,421.40x = 245,102.92 × 43,479.04
  4. Step 4: Simplify right side
    163,421.40x = 10,656,839,662.80
  5. Step 5: Solve for x
    x = 10,656,839,662.80/163,421.40
  6. Step 6: Final answer
    x = 65,210.80

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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.