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Finding the Fourth Proportional to 434,538.90, 651,808.35 and 154,019.70

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Solution

The fourth proportional to 434,538.90, 651,808.35 and 154,019.70 is: 231,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,538.90 : 651,808.35 = 154,019.70 : x
  2. Step 2: Convert to fraction form
    434,538.90/651,808.35 = 154,019.70/x
  3. Step 3: Cross multiply
    434,538.90x = 651,808.35 × 154,019.70
  4. Step 4: Simplify right side
    434,538.90x = 100,391,326,524.50
  5. Step 5: Solve for x
    x = 100,391,326,524.50/434,538.90
  6. Step 6: Final answer
    x = 231,029.55

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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.