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Finding the Fourth Proportional to 309,293.20, 427,030.20 and 237,545

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Solution

The fourth proportional to 309,293.20, 427,030.20 and 237,545 is: 327,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,293.20 : 427,030.20 = 237,545 : x
  2. Step 2: Convert to fraction form
    309,293.20/427,030.20 = 237,545/x
  3. Step 3: Cross multiply
    309,293.20x = 427,030.20 × 237,545
  4. Step 4: Simplify right side
    309,293.20x = 101,438,888,859
  5. Step 5: Solve for x
    x = 101,438,888,859/309,293.20
  6. Step 6: Final answer
    x = 327,969.99

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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.