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Finding the Fourth Proportional to 290,308,840.80, 435,463,261.20 and 246,470,863.20

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Solution

The fourth proportional to 290,308,840.80, 435,463,261.20 and 246,470,863.20 is: 369,706,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,308,840.80 : 435,463,261.20 = 246,470,863.20 : x
  2. Step 2: Convert to fraction form
    290,308,840.80/435,463,261.20 = 246,470,863.20/x
  3. Step 3: Cross multiply
    290,308,840.80x = 435,463,261.20 × 246,470,863.20
  4. Step 4: Simplify right side
    290,308,840.80x = 107,329,005,879,851,056
  5. Step 5: Solve for x
    x = 107,329,005,879,851,056/290,308,840.80
  6. Step 6: Final answer
    x = 369,706,294.80

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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.