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Finding the Fourth Proportional to 179,980.20, 269,970.30 and 144,988.20

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Solution

The fourth proportional to 179,980.20, 269,970.30 and 144,988.20 is: 217,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,980.20 : 269,970.30 = 144,988.20 : x
  2. Step 2: Convert to fraction form
    179,980.20/269,970.30 = 144,988.20/x
  3. Step 3: Cross multiply
    179,980.20x = 269,970.30 × 144,988.20
  4. Step 4: Simplify right side
    179,980.20x = 39,142,507,850.46
  5. Step 5: Solve for x
    x = 39,142,507,850.46/179,980.20
  6. Step 6: Final answer
    x = 217,482.30

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1.5x scale

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.