Home / 257,871,704.40-386,807,556.60-85,365,955.80

Finding the Fourth Proportional to 257,871,704.40, 386,807,556.60 and 85,365,955.80

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Solution

The fourth proportional to 257,871,704.40, 386,807,556.60 and 85,365,955.80 is: 128,048,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,871,704.40 : 386,807,556.60 = 85,365,955.80 : x
  2. Step 2: Convert to fraction form
    257,871,704.40/386,807,556.60 = 85,365,955.80/x
  3. Step 3: Cross multiply
    257,871,704.40x = 386,807,556.60 × 85,365,955.80
  4. Step 4: Simplify right side
    257,871,704.40x = 33,020,196,779,821,600
  5. Step 5: Solve for x
    x = 33,020,196,779,821,600/257,871,704.40
  6. Step 6: Final answer
    x = 128,048,933.70

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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.