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Finding the Fourth Proportional to 445,274.60, 668,349.30 and 220,888.40

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Solution

The fourth proportional to 445,274.60, 668,349.30 and 220,888.40 is: 331,549.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,274.60 : 668,349.30 = 220,888.40 : x
  2. Step 2: Convert to fraction form
    445,274.60/668,349.30 = 220,888.40/x
  3. Step 3: Cross multiply
    445,274.60x = 668,349.30 × 220,888.40
  4. Step 4: Simplify right side
    445,274.60x = 147,630,607,518.12
  5. Step 5: Solve for x
    x = 147,630,607,518.12/445,274.60
  6. Step 6: Final answer
    x = 331,549.58

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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.