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Finding the Fourth Proportional to 325,772.80, 488,302.80 and 115,302.40

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Solution

The fourth proportional to 325,772.80, 488,302.80 and 115,302.40 is: 172,827.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,772.80 : 488,302.80 = 115,302.40 : x
  2. Step 2: Convert to fraction form
    325,772.80/488,302.80 = 115,302.40/x
  3. Step 3: Cross multiply
    325,772.80x = 488,302.80 × 115,302.40
  4. Step 4: Simplify right side
    325,772.80x = 56,302,484,766.72
  5. Step 5: Solve for x
    x = 56,302,484,766.72/325,772.80
  6. Step 6: Final answer
    x = 172,827.46

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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.