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Finding the Fourth Proportional to 339,908.40, 509,862.60 and 302,583.60

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Solution

The fourth proportional to 339,908.40, 509,862.60 and 302,583.60 is: 453,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,908.40 : 509,862.60 = 302,583.60 : x
  2. Step 2: Convert to fraction form
    339,908.40/509,862.60 = 302,583.60/x
  3. Step 3: Cross multiply
    339,908.40x = 509,862.60 × 302,583.60
  4. Step 4: Simplify right side
    339,908.40x = 154,276,061,013.36
  5. Step 5: Solve for x
    x = 154,276,061,013.36/339,908.40
  6. Step 6: Final answer
    x = 453,875.40

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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.