Home / 427,273,984.60-640,903,973.10-136,137,152.44

Finding the Fourth Proportional to 427,273,984.60, 640,903,973.10 and 136,137,152.44

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Solution

The fourth proportional to 427,273,984.60, 640,903,973.10 and 136,137,152.44 is: 204,203,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,273,984.60 : 640,903,973.10 = 136,137,152.44 : x
  2. Step 2: Convert to fraction form
    427,273,984.60/640,903,973.10 = 136,137,152.44/x
  3. Step 3: Cross multiply
    427,273,984.60x = 640,903,973.10 × 136,137,152.44
  4. Step 4: Simplify right side
    427,273,984.60x = 87,250,841,885,316,368
  5. Step 5: Solve for x
    x = 87,250,841,885,316,368/427,273,984.60
  6. Step 6: Final answer
    x = 204,203,497.12

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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.