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Finding the Fourth Proportional to 303,312.10, 454,968.15 and 145,459.30

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Solution

The fourth proportional to 303,312.10, 454,968.15 and 145,459.30 is: 218,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,312.10 : 454,968.15 = 145,459.30 : x
  2. Step 2: Convert to fraction form
    303,312.10/454,968.15 = 145,459.30/x
  3. Step 3: Cross multiply
    303,312.10x = 454,968.15 × 145,459.30
  4. Step 4: Simplify right side
    303,312.10x = 66,179,348,621.30
  5. Step 5: Solve for x
    x = 66,179,348,621.30/303,312.10
  6. Step 6: Final answer
    x = 218,188.95

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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.