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Finding the Fourth Proportional to 434,570.40, 651,855.60 and 154,051.20

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Solution

The fourth proportional to 434,570.40, 651,855.60 and 154,051.20 is: 231,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,570.40 : 651,855.60 = 154,051.20 : x
  2. Step 2: Convert to fraction form
    434,570.40/651,855.60 = 154,051.20/x
  3. Step 3: Cross multiply
    434,570.40x = 651,855.60 × 154,051.20
  4. Step 4: Simplify right side
    434,570.40x = 100,419,137,406.72
  5. Step 5: Solve for x
    x = 100,419,137,406.72/434,570.40
  6. Step 6: Final answer
    x = 231,076.80

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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.