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Finding the Fourth Proportional to 469,690, 648,172.20 and 268,490.32

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Solution

The fourth proportional to 469,690, 648,172.20 and 268,490.32 is: 370,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,690 : 648,172.20 = 268,490.32 : x
  2. Step 2: Convert to fraction form
    469,690/648,172.20 = 268,490.32/x
  3. Step 3: Cross multiply
    469,690x = 648,172.20 × 268,490.32
  4. Step 4: Simplify right side
    469,690x = 174,027,961,393.10
  5. Step 5: Solve for x
    x = 174,027,961,393.10/469,690
  6. Step 6: Final answer
    x = 370,516.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.