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Finding the Fourth Proportional to 295,518.60, 442,986.30 and 145,636.20

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Solution

The fourth proportional to 295,518.60, 442,986.30 and 145,636.20 is: 218,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,518.60 : 442,986.30 = 145,636.20 : x
  2. Step 2: Convert to fraction form
    295,518.60/442,986.30 = 145,636.20/x
  3. Step 3: Cross multiply
    295,518.60x = 442,986.30 × 145,636.20
  4. Step 4: Simplify right side
    295,518.60x = 64,514,841,384.06
  5. Step 5: Solve for x
    x = 64,514,841,384.06/295,518.60
  6. Step 6: Final answer
    x = 218,310.59

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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.