Home / 427,305,483.90-640,946,268.45-136,190,075.76

Finding the Fourth Proportional to 427,305,483.90, 640,946,268.45 and 136,190,075.76

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Solution

The fourth proportional to 427,305,483.90, 640,946,268.45 and 136,190,075.76 is: 204,281,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,305,483.90 : 640,946,268.45 = 136,190,075.76 : x
  2. Step 2: Convert to fraction form
    427,305,483.90/640,946,268.45 = 136,190,075.76/x
  3. Step 3: Cross multiply
    427,305,483.90x = 640,946,268.45 × 136,190,075.76
  4. Step 4: Simplify right side
    427,305,483.90x = 87,290,520,858,294,800
  5. Step 5: Solve for x
    x = 87,290,520,858,294,800/427,305,483.90
  6. Step 6: Final answer
    x = 204,281,302.60

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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.