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Finding the Fourth Proportional to 342,020.40, 513,030.60 and 92,702.40

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Solution

The fourth proportional to 342,020.40, 513,030.60 and 92,702.40 is: 139,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,020.40 : 513,030.60 = 92,702.40 : x
  2. Step 2: Convert to fraction form
    342,020.40/513,030.60 = 92,702.40/x
  3. Step 3: Cross multiply
    342,020.40x = 513,030.60 × 92,702.40
  4. Step 4: Simplify right side
    342,020.40x = 47,559,167,893.44
  5. Step 5: Solve for x
    x = 47,559,167,893.44/342,020.40
  6. Step 6: Final answer
    x = 139,053.60

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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.