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Finding the Fourth Proportional to 470,236.74, 648,926.55 and 255,376.86

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Solution

The fourth proportional to 470,236.74, 648,926.55 and 255,376.86 is: 352,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,236.74 : 648,926.55 = 255,376.86 : x
  2. Step 2: Convert to fraction form
    470,236.74/648,926.55 = 255,376.86/x
  3. Step 3: Cross multiply
    470,236.74x = 648,926.55 × 255,376.86
  4. Step 4: Simplify right side
    470,236.74x = 165,720,824,709.63
  5. Step 5: Solve for x
    x = 165,720,824,709.63/470,236.74
  6. Step 6: Final answer
    x = 352,419.98

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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.