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Finding the Fourth Proportional to 253,911.80, 380,964.90 and 249,926.60

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Solution

The fourth proportional to 253,911.80, 380,964.90 and 249,926.60 is: 374,985.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,911.80 : 380,964.90 = 249,926.60 : x
  2. Step 2: Convert to fraction form
    253,911.80/380,964.90 = 249,926.60/x
  3. Step 3: Cross multiply
    253,911.80x = 380,964.90 × 249,926.60
  4. Step 4: Simplify right side
    253,911.80x = 95,213,262,176.34
  5. Step 5: Solve for x
    x = 95,213,262,176.34/253,911.80
  6. Step 6: Final answer
    x = 374,985.57

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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.