Home / 390,023,999.10-585,122,603.85-131,231,915.10

Finding the Fourth Proportional to 390,023,999.10, 585,122,603.85 and 131,231,915.10

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Solution

The fourth proportional to 390,023,999.10, 585,122,603.85 and 131,231,915.10 is: 196,877,012.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,023,999.10 : 585,122,603.85 = 131,231,915.10 : x
  2. Step 2: Convert to fraction form
    390,023,999.10/585,122,603.85 = 131,231,915.10/x
  3. Step 3: Cross multiply
    390,023,999.10x = 585,122,603.85 × 131,231,915.10
  4. Step 4: Simplify right side
    390,023,999.10x = 76,786,759,871,534,128
  5. Step 5: Solve for x
    x = 76,786,759,871,534,128/390,023,999.10
  6. Step 6: Final answer
    x = 196,877,012.82

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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.