Home / 287,330,771.72-396,516,449.79-155,171,755.50

Finding the Fourth Proportional to 287,330,771.72, 396,516,449.79 and 155,171,755.50

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Solution

The fourth proportional to 287,330,771.72, 396,516,449.79 and 155,171,755.50 is: 214,137,014.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,330,771.72 : 396,516,449.79 = 155,171,755.50 : x
  2. Step 2: Convert to fraction form
    287,330,771.72/396,516,449.79 = 155,171,755.50/x
  3. Step 3: Cross multiply
    287,330,771.72x = 396,516,449.79 × 155,171,755.50
  4. Step 4: Simplify right side
    287,330,771.72x = 61,528,153,598,541,912
  5. Step 5: Solve for x
    x = 61,528,153,598,541,912/287,330,771.72
  6. Step 6: Final answer
    x = 214,137,014.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.