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Finding the Fourth Proportional to 302,403.60, 453,605.40 and 213,830.10

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Solution

The fourth proportional to 302,403.60, 453,605.40 and 213,830.10 is: 320,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,403.60 : 453,605.40 = 213,830.10 : x
  2. Step 2: Convert to fraction form
    302,403.60/453,605.40 = 213,830.10/x
  3. Step 3: Cross multiply
    302,403.60x = 453,605.40 × 213,830.10
  4. Step 4: Simplify right side
    302,403.60x = 96,994,488,042.54
  5. Step 5: Solve for x
    x = 96,994,488,042.54/302,403.60
  6. Step 6: Final answer
    x = 320,745.15

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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.