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Finding the Fourth Proportional to 201,204,638.60, 301,806,957.90 and 172,506,824.60

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Solution

The fourth proportional to 201,204,638.60, 301,806,957.90 and 172,506,824.60 is: 258,760,236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,204,638.60 : 301,806,957.90 = 172,506,824.60 : x
  2. Step 2: Convert to fraction form
    201,204,638.60/301,806,957.90 = 172,506,824.60/x
  3. Step 3: Cross multiply
    201,204,638.60x = 301,806,957.90 × 172,506,824.60
  4. Step 4: Simplify right side
    201,204,638.60x = 52,063,759,949,514,880
  5. Step 5: Solve for x
    x = 52,063,759,949,514,880/201,204,638.60
  6. Step 6: Final answer
    x = 258,760,236.90

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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.