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Finding the Fourth Proportional to 434,538.80, 651,808.20 and 292,821.20

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Solution

The fourth proportional to 434,538.80, 651,808.20 and 292,821.20 is: 439,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,538.80 : 651,808.20 = 292,821.20 : x
  2. Step 2: Convert to fraction form
    434,538.80/651,808.20 = 292,821.20/x
  3. Step 3: Cross multiply
    434,538.80x = 651,808.20 × 292,821.20
  4. Step 4: Simplify right side
    434,538.80x = 190,863,259,293.84
  5. Step 5: Solve for x
    x = 190,863,259,293.84/434,538.80
  6. Step 6: Final answer
    x = 439,231.80

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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.