Home / 242,638,129.80-363,957,194.70-139,325,999.40

Finding the Fourth Proportional to 242,638,129.80, 363,957,194.70 and 139,325,999.40

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Solution

The fourth proportional to 242,638,129.80, 363,957,194.70 and 139,325,999.40 is: 208,988,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,638,129.80 : 363,957,194.70 = 139,325,999.40 : x
  2. Step 2: Convert to fraction form
    242,638,129.80/363,957,194.70 = 139,325,999.40/x
  3. Step 3: Cross multiply
    242,638,129.80x = 363,957,194.70 × 139,325,999.40
  4. Step 4: Simplify right side
    242,638,129.80x = 50,708,699,890,397,880
  5. Step 5: Solve for x
    x = 50,708,699,890,397,880/242,638,129.80
  6. Step 6: Final answer
    x = 208,988,999.10

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1.5x scale

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.