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Finding the Fourth Proportional to 323,915.88, 485,417.04 and 152,955.16

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Solution

The fourth proportional to 323,915.88, 485,417.04 and 152,955.16 is: 229,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,915.88 : 485,417.04 = 152,955.16 : x
  2. Step 2: Convert to fraction form
    323,915.88/485,417.04 = 152,955.16/x
  3. Step 3: Cross multiply
    323,915.88x = 485,417.04 × 152,955.16
  4. Step 4: Simplify right side
    323,915.88x = 74,247,041,019.93
  5. Step 5: Solve for x
    x = 74,247,041,019.93/323,915.88
  6. Step 6: Final answer
    x = 229,217.05

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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.