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Finding the Fourth Proportional to 430,023.20, 644,791.80 and 163,792.40

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Solution

The fourth proportional to 430,023.20, 644,791.80 and 163,792.40 is: 245,596.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,023.20 : 644,791.80 = 163,792.40 : x
  2. Step 2: Convert to fraction form
    430,023.20/644,791.80 = 163,792.40/x
  3. Step 3: Cross multiply
    430,023.20x = 644,791.80 × 163,792.40
  4. Step 4: Simplify right side
    430,023.20x = 105,611,996,422.32
  5. Step 5: Solve for x
    x = 105,611,996,422.32/430,023.20
  6. Step 6: Final answer
    x = 245,596.04

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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.