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Finding the Fourth Proportional to 470,188.88, 648,865.36 and 255,330.80

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Solution

The fourth proportional to 470,188.88, 648,865.36 and 255,330.80 is: 352,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,188.88 : 648,865.36 = 255,330.80 : x
  2. Step 2: Convert to fraction form
    470,188.88/648,865.36 = 255,330.80/x
  3. Step 3: Cross multiply
    470,188.88x = 648,865.36 × 255,330.80
  4. Step 4: Simplify right side
    470,188.88x = 165,675,311,461.09
  5. Step 5: Solve for x
    x = 165,675,311,461.09/470,188.88
  6. Step 6: Final answer
    x = 352,359.06

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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.