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Finding the Fourth Proportional to 459,672.20, 689,508.30 and 122,712.20

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Solution

The fourth proportional to 459,672.20, 689,508.30 and 122,712.20 is: 184,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,672.20 : 689,508.30 = 122,712.20 : x
  2. Step 2: Convert to fraction form
    459,672.20/689,508.30 = 122,712.20/x
  3. Step 3: Cross multiply
    459,672.20x = 689,508.30 × 122,712.20
  4. Step 4: Simplify right side
    459,672.20x = 84,611,080,411.26
  5. Step 5: Solve for x
    x = 84,611,080,411.26/459,672.20
  6. Step 6: Final answer
    x = 184,068.30

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Similar ratio
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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.