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Finding the Fourth Proportional to 432,328.80, 648,104.40 and 282,640.80

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Solution

The fourth proportional to 432,328.80, 648,104.40 and 282,640.80 is: 423,707.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,328.80 : 648,104.40 = 282,640.80 : x
  2. Step 2: Convert to fraction form
    432,328.80/648,104.40 = 282,640.80/x
  3. Step 3: Cross multiply
    432,328.80x = 648,104.40 × 282,640.80
  4. Step 4: Simplify right side
    432,328.80x = 183,180,746,099.52
  5. Step 5: Solve for x
    x = 183,180,746,099.52/432,328.80
  6. Step 6: Final answer
    x = 423,707.02

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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.