Home / 258,056,074.40-387,075,817.20-85,540,848.80

Finding the Fourth Proportional to 258,056,074.40, 387,075,817.20 and 85,540,848.80

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Solution

The fourth proportional to 258,056,074.40, 387,075,817.20 and 85,540,848.80 is: 128,308,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,056,074.40 : 387,075,817.20 = 85,540,848.80 : x
  2. Step 2: Convert to fraction form
    258,056,074.40/387,075,817.20 = 85,540,848.80/x
  3. Step 3: Cross multiply
    258,056,074.40x = 387,075,817.20 × 85,540,848.80
  4. Step 4: Simplify right side
    258,056,074.40x = 33,110,793,953,241,636
  5. Step 5: Solve for x
    x = 33,110,793,953,241,636/258,056,074.40
  6. Step 6: Final answer
    x = 128,308,523.76

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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.