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Finding the Fourth Proportional to 298,276.78, 411,613.68 and 162,307.58

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Solution

The fourth proportional to 298,276.78, 411,613.68 and 162,307.58 is: 223,979.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,276.78 : 411,613.68 = 162,307.58 : x
  2. Step 2: Convert to fraction form
    298,276.78/411,613.68 = 162,307.58/x
  3. Step 3: Cross multiply
    298,276.78x = 411,613.68 × 162,307.58
  4. Step 4: Simplify right side
    298,276.78x = 66,808,020,295.69
  5. Step 5: Solve for x
    x = 66,808,020,295.69/298,276.78
  6. Step 6: Final answer
    x = 223,979.96

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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.