Home / 265,356,078.40-398,034,117.60-187,871,980.60

Finding the Fourth Proportional to 265,356,078.40, 398,034,117.60 and 187,871,980.60

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Solution

The fourth proportional to 265,356,078.40, 398,034,117.60 and 187,871,980.60 is: 281,807,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,356,078.40 : 398,034,117.60 = 187,871,980.60 : x
  2. Step 2: Convert to fraction form
    265,356,078.40/398,034,117.60 = 187,871,980.60/x
  3. Step 3: Cross multiply
    265,356,078.40x = 398,034,117.60 × 187,871,980.60
  4. Step 4: Simplify right side
    265,356,078.40x = 74,779,458,019,885,328
  5. Step 5: Solve for x
    x = 74,779,458,019,885,328/265,356,078.40
  6. Step 6: Final answer
    x = 281,807,970.90

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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.