Home / 258,675,331.60-388,012,997.40-243,369,830.80

Finding the Fourth Proportional to 258,675,331.60, 388,012,997.40 and 243,369,830.80

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Solution

The fourth proportional to 258,675,331.60, 388,012,997.40 and 243,369,830.80 is: 365,054,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,675,331.60 : 388,012,997.40 = 243,369,830.80 : x
  2. Step 2: Convert to fraction form
    258,675,331.60/388,012,997.40 = 243,369,830.80/x
  3. Step 3: Cross multiply
    258,675,331.60x = 388,012,997.40 × 243,369,830.80
  4. Step 4: Simplify right side
    258,675,331.60x = 94,430,657,525,438,832
  5. Step 5: Solve for x
    x = 94,430,657,525,438,832/258,675,331.60
  6. Step 6: Final answer
    x = 365,054,746.20

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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.