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Finding the Fourth Proportional to 470,281.28, 648,992.85 and 255,425.54

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Solution

The fourth proportional to 470,281.28, 648,992.85 and 255,425.54 is: 352,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,281.28 : 648,992.85 = 255,425.54 : x
  2. Step 2: Convert to fraction form
    470,281.28/648,992.85 = 255,425.54/x
  3. Step 3: Cross multiply
    470,281.28x = 648,992.85 × 255,425.54
  4. Step 4: Simplify right side
    470,281.28x = 165,769,349,167.39
  5. Step 5: Solve for x
    x = 165,769,349,167.39/470,281.28
  6. Step 6: Final answer
    x = 352,489.79

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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.