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Finding the Fourth Proportional to 211,133,028.80, 316,699,543.20 and 211,133,028.80

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Solution

The fourth proportional to 211,133,028.80, 316,699,543.20 and 211,133,028.80 is: 316,699,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,133,028.80 : 316,699,543.20 = 211,133,028.80 : x
  2. Step 2: Convert to fraction form
    211,133,028.80/316,699,543.20 = 211,133,028.80/x
  3. Step 3: Cross multiply
    211,133,028.80x = 316,699,543.20 × 211,133,028.80
  4. Step 4: Simplify right side
    211,133,028.80x = 66,865,733,775,392,448
  5. Step 5: Solve for x
    x = 66,865,733,775,392,448/211,133,028.80
  6. Step 6: Final answer
    x = 316,699,543.20

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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.