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Finding the Fourth Proportional to 628,692.82, 943,030.02 and 155,378.22

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Solution

The fourth proportional to 628,692.82, 943,030.02 and 155,378.22 is: 233,065.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,692.82 : 943,030.02 = 155,378.22 : x
  2. Step 2: Convert to fraction form
    628,692.82/943,030.02 = 155,378.22/x
  3. Step 3: Cross multiply
    628,692.82x = 943,030.02 × 155,378.22
  4. Step 4: Simplify right side
    628,692.82x = 146,526,325,914.16
  5. Step 5: Solve for x
    x = 146,526,325,914.16/628,692.82
  6. Step 6: Final answer
    x = 233,065.05

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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.