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Finding the Fourth Proportional to 434,383.20, 651,623.40 and 134,861.40

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Solution

The fourth proportional to 434,383.20, 651,623.40 and 134,861.40 is: 202,307.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,383.20 : 651,623.40 = 134,861.40 : x
  2. Step 2: Convert to fraction form
    434,383.20/651,623.40 = 134,861.40/x
  3. Step 3: Cross multiply
    434,383.20x = 651,623.40 × 134,861.40
  4. Step 4: Simplify right side
    434,383.20x = 87,878,843,996.76
  5. Step 5: Solve for x
    x = 87,878,843,996.76/434,383.20
  6. Step 6: Final answer
    x = 202,307.19

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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.