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Finding the Fourth Proportional to 252,485.84, 348,689.76 and 209,620.64

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Solution

The fourth proportional to 252,485.84, 348,689.76 and 209,620.64 is: 289,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,485.84 : 348,689.76 = 209,620.64 : x
  2. Step 2: Convert to fraction form
    252,485.84/348,689.76 = 209,620.64/x
  3. Step 3: Cross multiply
    252,485.84x = 348,689.76 × 209,620.64
  4. Step 4: Simplify right side
    252,485.84x = 73,092,570,652.65
  5. Step 5: Solve for x
    x = 73,092,570,652.65/252,485.84
  6. Step 6: Final answer
    x = 289,491.76

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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.