Home / 258,471,140.40-387,706,710.60-185,911,729.20

Finding the Fourth Proportional to 258,471,140.40, 387,706,710.60 and 185,911,729.20

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Solution

The fourth proportional to 258,471,140.40, 387,706,710.60 and 185,911,729.20 is: 278,867,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,471,140.40 : 387,706,710.60 = 185,911,729.20 : x
  2. Step 2: Convert to fraction form
    258,471,140.40/387,706,710.60 = 185,911,729.20/x
  3. Step 3: Cross multiply
    258,471,140.40x = 387,706,710.60 × 185,911,729.20
  4. Step 4: Simplify right side
    258,471,140.40x = 72,079,224,990,089,968
  5. Step 5: Solve for x
    x = 72,079,224,990,089,968/258,471,140.40
  6. Step 6: Final answer
    x = 278,867,593.80

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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.