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Finding the Fourth Proportional to 432,417.46, 648,626.16 and 219,152.16

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Solution

The fourth proportional to 432,417.46, 648,626.16 and 219,152.16 is: 328,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,417.46 : 648,626.16 = 219,152.16 : x
  2. Step 2: Convert to fraction form
    432,417.46/648,626.16 = 219,152.16/x
  3. Step 3: Cross multiply
    432,417.46x = 648,626.16 × 219,152.16
  4. Step 4: Simplify right side
    432,417.46x = 142,147,822,374.94
  5. Step 5: Solve for x
    x = 142,147,822,374.94/432,417.46
  6. Step 6: Final answer
    x = 328,728.22

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Similar ratio
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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.