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Finding the Fourth Proportional to 290,690.49, 401,348.58 and 259,968.13

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Solution

The fourth proportional to 290,690.49, 401,348.58 and 259,968.13 is: 358,931.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,690.49 : 401,348.58 = 259,968.13 : x
  2. Step 2: Convert to fraction form
    290,690.49/401,348.58 = 259,968.13/x
  3. Step 3: Cross multiply
    290,690.49x = 401,348.58 × 259,968.13
  4. Step 4: Simplify right side
    290,690.49x = 104,337,839,820.76
  5. Step 5: Solve for x
    x = 104,337,839,820.76/290,690.49
  6. Step 6: Final answer
    x = 358,931.04

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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.