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Finding the Fourth Proportional to 355,533.60, 490,686.48 and 217,794.72

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Solution

The fourth proportional to 355,533.60, 490,686.48 and 217,794.72 is: 300,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,533.60 : 490,686.48 = 217,794.72 : x
  2. Step 2: Convert to fraction form
    355,533.60/490,686.48 = 217,794.72/x
  3. Step 3: Cross multiply
    355,533.60x = 490,686.48 × 217,794.72
  4. Step 4: Simplify right side
    355,533.60x = 106,868,924,519.39
  5. Step 5: Solve for x
    x = 106,868,924,519.39/355,533.60
  6. Step 6: Final answer
    x = 300,587.41

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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.