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Finding the Fourth Proportional to 258,693,482.40, 388,040,223.60 and 166,860,477.60

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Solution

The fourth proportional to 258,693,482.40, 388,040,223.60 and 166,860,477.60 is: 250,290,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,693,482.40 : 388,040,223.60 = 166,860,477.60 : x
  2. Step 2: Convert to fraction form
    258,693,482.40/388,040,223.60 = 166,860,477.60/x
  3. Step 3: Cross multiply
    258,693,482.40x = 388,040,223.60 × 166,860,477.60
  4. Step 4: Simplify right side
    258,693,482.40x = 64,748,577,037,906,792
  5. Step 5: Solve for x
    x = 64,748,577,037,906,792/258,693,482.40
  6. Step 6: Final answer
    x = 250,290,716.40

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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.