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Finding the Fourth Proportional to 339,293.60, 508,940.40 and 310,263.20

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Solution

The fourth proportional to 339,293.60, 508,940.40 and 310,263.20 is: 465,394.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,293.60 : 508,940.40 = 310,263.20 : x
  2. Step 2: Convert to fraction form
    339,293.60/508,940.40 = 310,263.20/x
  3. Step 3: Cross multiply
    339,293.60x = 508,940.40 × 310,263.20
  4. Step 4: Simplify right side
    339,293.60x = 157,905,477,113.28
  5. Step 5: Solve for x
    x = 157,905,477,113.28/339,293.60
  6. Step 6: Final answer
    x = 465,394.80

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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.