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Finding the Fourth Proportional to 290,321,851.80, 435,482,777.70 and 167,877,845.40

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Solution

The fourth proportional to 290,321,851.80, 435,482,777.70 and 167,877,845.40 is: 251,816,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,321,851.80 : 435,482,777.70 = 167,877,845.40 : x
  2. Step 2: Convert to fraction form
    290,321,851.80/435,482,777.70 = 167,877,845.40/x
  3. Step 3: Cross multiply
    290,321,851.80x = 435,482,777.70 × 167,877,845.40
  4. Step 4: Simplify right side
    290,321,851.80x = 73,107,910,429,083,168
  5. Step 5: Solve for x
    x = 73,107,910,429,083,168/290,321,851.80
  6. Step 6: Final answer
    x = 251,816,768.10

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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.