Home / 429,224,431.60-643,883,886.60-138,042,002.80

Finding the Fourth Proportional to 429,224,431.60, 643,883,886.60 and 138,042,002.80

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Solution

The fourth proportional to 429,224,431.60, 643,883,886.60 and 138,042,002.80 is: 207,078,196.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,224,431.60 : 643,883,886.60 = 138,042,002.80 : x
  2. Step 2: Convert to fraction form
    429,224,431.60/643,883,886.60 = 138,042,002.80/x
  3. Step 3: Cross multiply
    429,224,431.60x = 643,883,886.60 × 138,042,002.80
  4. Step 4: Simplify right side
    429,224,431.60x = 88,883,021,276,912,096
  5. Step 5: Solve for x
    x = 88,883,021,276,912,096/429,224,431.60
  6. Step 6: Final answer
    x = 207,078,196.70

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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.