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Finding the Fourth Proportional to 212,624.20, 318,936.30 and 202,256.20

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Solution

The fourth proportional to 212,624.20, 318,936.30 and 202,256.20 is: 303,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,624.20 : 318,936.30 = 202,256.20 : x
  2. Step 2: Convert to fraction form
    212,624.20/318,936.30 = 202,256.20/x
  3. Step 3: Cross multiply
    212,624.20x = 318,936.30 × 202,256.20
  4. Step 4: Simplify right side
    212,624.20x = 64,506,844,080.06
  5. Step 5: Solve for x
    x = 64,506,844,080.06/212,624.20
  6. Step 6: Final answer
    x = 303,384.30

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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.