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Finding the Fourth Proportional to 171,048.20, 255,881.10 and 147,931.40

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Solution

The fourth proportional to 171,048.20, 255,881.10 and 147,931.40 is: 221,299.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,048.20 : 255,881.10 = 147,931.40 : x
  2. Step 2: Convert to fraction form
    171,048.20/255,881.10 = 147,931.40/x
  3. Step 3: Cross multiply
    171,048.20x = 255,881.10 × 147,931.40
  4. Step 4: Simplify right side
    171,048.20x = 37,852,849,356.54
  5. Step 5: Solve for x
    x = 37,852,849,356.54/171,048.20
  6. Step 6: Final answer
    x = 221,299.31

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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.