Home / 438,426,745.40-657,640,118.10-131,679,000.20

Finding the Fourth Proportional to 438,426,745.40, 657,640,118.10 and 131,679,000.20

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Solution

The fourth proportional to 438,426,745.40, 657,640,118.10 and 131,679,000.20 is: 197,518,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,426,745.40 : 657,640,118.10 = 131,679,000.20 : x
  2. Step 2: Convert to fraction form
    438,426,745.40/657,640,118.10 = 131,679,000.20/x
  3. Step 3: Cross multiply
    438,426,745.40x = 657,640,118.10 × 131,679,000.20
  4. Step 4: Simplify right side
    438,426,745.40x = 86,597,393,242,817,936
  5. Step 5: Solve for x
    x = 86,597,393,242,817,936/438,426,745.40
  6. Step 6: Final answer
    x = 197,518,500.30

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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.