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Finding the Fourth Proportional to 613,176.84, 919,431.72 and 213,710.40

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Solution

The fourth proportional to 613,176.84, 919,431.72 and 213,710.40 is: 320,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,176.84 : 919,431.72 = 213,710.40 : x
  2. Step 2: Convert to fraction form
    613,176.84/919,431.72 = 213,710.40/x
  3. Step 3: Cross multiply
    613,176.84x = 919,431.72 × 213,710.40
  4. Step 4: Simplify right side
    613,176.84x = 196,492,120,653.89
  5. Step 5: Solve for x
    x = 196,492,120,653.89/613,176.84
  6. Step 6: Final answer
    x = 320,449.35

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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.