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Finding the Fourth Proportional to 287,673.06, 396,994.04 and 160,334.98

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Solution

The fourth proportional to 287,673.06, 396,994.04 and 160,334.98 is: 221,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,673.06 : 396,994.04 = 160,334.98 : x
  2. Step 2: Convert to fraction form
    287,673.06/396,994.04 = 160,334.98/x
  3. Step 3: Cross multiply
    287,673.06x = 396,994.04 × 160,334.98
  4. Step 4: Simplify right side
    287,673.06x = 63,652,031,463.52
  5. Step 5: Solve for x
    x = 63,652,031,463.52/287,673.06
  6. Step 6: Final answer
    x = 221,265.18

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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.