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Finding the Fourth Proportional to 339,842.80, 509,764.20 and 292,603.60

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Solution

The fourth proportional to 339,842.80, 509,764.20 and 292,603.60 is: 438,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,842.80 : 509,764.20 = 292,603.60 : x
  2. Step 2: Convert to fraction form
    339,842.80/509,764.20 = 292,603.60/x
  3. Step 3: Cross multiply
    339,842.80x = 509,764.20 × 292,603.60
  4. Step 4: Simplify right side
    339,842.80x = 149,158,840,071.12
  5. Step 5: Solve for x
    x = 149,158,840,071.12/339,842.80
  6. Step 6: Final answer
    x = 438,905.40

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1.5x scale

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.