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Finding the Fourth Proportional to 287,628.63, 396,929.46 and 160,312.42

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Solution

The fourth proportional to 287,628.63, 396,929.46 and 160,312.42 is: 221,232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,628.63 : 396,929.46 = 160,312.42 : x
  2. Step 2: Convert to fraction form
    287,628.63/396,929.46 = 160,312.42/x
  3. Step 3: Cross multiply
    287,628.63x = 396,929.46 × 160,312.42
  4. Step 4: Simplify right side
    287,628.63x = 63,632,722,301.89
  5. Step 5: Solve for x
    x = 63,632,722,301.89/287,628.63
  6. Step 6: Final answer
    x = 221,232.23

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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.