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Finding the Fourth Proportional to 465,680.39, 642,692.19 and 258,969.39

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Solution

The fourth proportional to 465,680.39, 642,692.19 and 258,969.39 is: 357,407.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,680.39 : 642,692.19 = 258,969.39 : x
  2. Step 2: Convert to fraction form
    465,680.39/642,692.19 = 258,969.39/x
  3. Step 3: Cross multiply
    465,680.39x = 642,692.19 × 258,969.39
  4. Step 4: Simplify right side
    465,680.39x = 166,437,604,402.06
  5. Step 5: Solve for x
    x = 166,437,604,402.06/465,680.39
  6. Step 6: Final answer
    x = 357,407.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.