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Finding the Fourth Proportional to 249,135.60, 373,314.60 and 215,698.80

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Solution

The fourth proportional to 249,135.60, 373,314.60 and 215,698.80 is: 323,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,135.60 : 373,314.60 = 215,698.80 : x
  2. Step 2: Convert to fraction form
    249,135.60/373,314.60 = 215,698.80/x
  3. Step 3: Cross multiply
    249,135.60x = 373,314.60 × 215,698.80
  4. Step 4: Simplify right side
    249,135.60x = 80,523,511,242.48
  5. Step 5: Solve for x
    x = 80,523,511,242.48/249,135.60
  6. Step 6: Final answer
    x = 323,211.58

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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.