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Finding the Fourth Proportional to 321,779.20, 482,668.80 and 203,065.60

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Solution

The fourth proportional to 321,779.20, 482,668.80 and 203,065.60 is: 304,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,779.20 : 482,668.80 = 203,065.60 : x
  2. Step 2: Convert to fraction form
    321,779.20/482,668.80 = 203,065.60/x
  3. Step 3: Cross multiply
    321,779.20x = 482,668.80 × 203,065.60
  4. Step 4: Simplify right side
    321,779.20x = 98,013,429,473.28
  5. Step 5: Solve for x
    x = 98,013,429,473.28/321,779.20
  6. Step 6: Final answer
    x = 304,598.40

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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.