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Finding the Fourth Proportional to 313,659,619.60, 470,489,429.40 and 210,347,489.20

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Solution

The fourth proportional to 313,659,619.60, 470,489,429.40 and 210,347,489.20 is: 315,521,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,659,619.60 : 470,489,429.40 = 210,347,489.20 : x
  2. Step 2: Convert to fraction form
    313,659,619.60/470,489,429.40 = 210,347,489.20/x
  3. Step 3: Cross multiply
    313,659,619.60x = 470,489,429.40 × 210,347,489.20
  4. Step 4: Simplify right side
    313,659,619.60x = 98,966,270,169,430,656
  5. Step 5: Solve for x
    x = 98,966,270,169,430,656/313,659,619.60
  6. Step 6: Final answer
    x = 315,521,233.80

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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.