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Finding the Fourth Proportional to 345,235.68, 476,357.04 and 218,085.60

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Solution

The fourth proportional to 345,235.68, 476,357.04 and 218,085.60 is: 300,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,235.68 : 476,357.04 = 218,085.60 : x
  2. Step 2: Convert to fraction form
    345,235.68/476,357.04 = 218,085.60/x
  3. Step 3: Cross multiply
    345,235.68x = 476,357.04 × 218,085.60
  4. Step 4: Simplify right side
    345,235.68x = 103,886,610,882.62
  5. Step 5: Solve for x
    x = 103,886,610,882.62/345,235.68
  6. Step 6: Final answer
    x = 300,915.05

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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.