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Finding the Fourth Proportional to 355,103.64, 489,473.82 and 240,346.08

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Solution

The fourth proportional to 355,103.64, 489,473.82 and 240,346.08 is: 331,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,103.64 : 489,473.82 = 240,346.08 : x
  2. Step 2: Convert to fraction form
    355,103.64/489,473.82 = 240,346.08/x
  3. Step 3: Cross multiply
    355,103.64x = 489,473.82 × 240,346.08
  4. Step 4: Simplify right side
    355,103.64x = 117,643,113,899.63
  5. Step 5: Solve for x
    x = 117,643,113,899.63/355,103.64
  6. Step 6: Final answer
    x = 331,292.33

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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.