Home / 257,871,707.40-386,807,561.10-85,365,958.80

Finding the Fourth Proportional to 257,871,707.40, 386,807,561.10 and 85,365,958.80

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Solution

The fourth proportional to 257,871,707.40, 386,807,561.10 and 85,365,958.80 is: 128,048,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,871,707.40 : 386,807,561.10 = 85,365,958.80 : x
  2. Step 2: Convert to fraction form
    257,871,707.40/386,807,561.10 = 85,365,958.80/x
  3. Step 3: Cross multiply
    257,871,707.40x = 386,807,561.10 × 85,365,958.80
  4. Step 4: Simplify right side
    257,871,707.40x = 33,020,198,324,391,084
  5. Step 5: Solve for x
    x = 33,020,198,324,391,084/257,871,707.40
  6. Step 6: Final answer
    x = 128,048,938.20

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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.