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Finding the Fourth Proportional to 389,050.89, 536,889.14 and 216,969.01

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Solution

The fourth proportional to 389,050.89, 536,889.14 and 216,969.01 is: 299,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,050.89 : 536,889.14 = 216,969.01 : x
  2. Step 2: Convert to fraction form
    389,050.89/536,889.14 = 216,969.01/x
  3. Step 3: Cross multiply
    389,050.89x = 536,889.14 × 216,969.01
  4. Step 4: Simplify right side
    389,050.89x = 116,488,306,670.30
  5. Step 5: Solve for x
    x = 116,488,306,670.30/389,050.89
  6. Step 6: Final answer
    x = 299,416.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.