Home / 287,190.18-396,359.58-164,730.30

Finding the Fourth Proportional to 287,190.18, 396,359.58 and 164,730.30

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Solution

The fourth proportional to 287,190.18, 396,359.58 and 164,730.30 is: 227,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,190.18 : 396,359.58 = 164,730.30 : x
  2. Step 2: Convert to fraction form
    287,190.18/396,359.58 = 164,730.30/x
  3. Step 3: Cross multiply
    287,190.18x = 396,359.58 × 164,730.30
  4. Step 4: Simplify right side
    287,190.18x = 65,292,432,521.27
  5. Step 5: Solve for x
    x = 65,292,432,521.27/287,190.18
  6. Step 6: Final answer
    x = 227,349.11

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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.