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Finding the Fourth Proportional to 453,610.40, 680,415.60 and 154,428.80

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Solution

The fourth proportional to 453,610.40, 680,415.60 and 154,428.80 is: 231,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,610.40 : 680,415.60 = 154,428.80 : x
  2. Step 2: Convert to fraction form
    453,610.40/680,415.60 = 154,428.80/x
  3. Step 3: Cross multiply
    453,610.40x = 680,415.60 × 154,428.80
  4. Step 4: Simplify right side
    453,610.40x = 105,075,764,609.28
  5. Step 5: Solve for x
    x = 105,075,764,609.28/453,610.40
  6. Step 6: Final answer
    x = 231,643.20

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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.