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Finding the Fourth Proportional to 417,693.20, 626,620.60 and 168,400.40

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Solution

The fourth proportional to 417,693.20, 626,620.60 and 168,400.40 is: 252,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,693.20 : 626,620.60 = 168,400.40 : x
  2. Step 2: Convert to fraction form
    417,693.20/626,620.60 = 168,400.40/x
  3. Step 3: Cross multiply
    417,693.20x = 626,620.60 × 168,400.40
  4. Step 4: Simplify right side
    417,693.20x = 105,523,159,688.24
  5. Step 5: Solve for x
    x = 105,523,159,688.24/417,693.20
  6. Step 6: Final answer
    x = 252,633.18

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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.