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Finding the Fourth Proportional to 353,293.60, 528,730.80 and 213,152.80

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Solution

The fourth proportional to 353,293.60, 528,730.80 and 213,152.80 is: 318,999.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,293.60 : 528,730.80 = 213,152.80 : x
  2. Step 2: Convert to fraction form
    353,293.60/528,730.80 = 213,152.80/x
  3. Step 3: Cross multiply
    353,293.60x = 528,730.80 × 213,152.80
  4. Step 4: Simplify right side
    353,293.60x = 112,700,450,466.24
  5. Step 5: Solve for x
    x = 112,700,450,466.24/353,293.60
  6. Step 6: Final answer
    x = 318,999.41

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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.