Home / 280,307,255.40-420,460,883.10-165,515,999.40

Finding the Fourth Proportional to 280,307,255.40, 420,460,883.10 and 165,515,999.40

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Solution

The fourth proportional to 280,307,255.40, 420,460,883.10 and 165,515,999.40 is: 248,273,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,307,255.40 : 420,460,883.10 = 165,515,999.40 : x
  2. Step 2: Convert to fraction form
    280,307,255.40/420,460,883.10 = 165,515,999.40/x
  3. Step 3: Cross multiply
    280,307,255.40x = 420,460,883.10 × 165,515,999.40
  4. Step 4: Simplify right side
    280,307,255.40x = 69,593,003,274,903,080
  5. Step 5: Solve for x
    x = 69,593,003,274,903,080/280,307,255.40
  6. Step 6: Final answer
    x = 248,273,999.10

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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.