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Finding the Fourth Proportional to 459,445.96, 689,168.94 and 209,953

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Solution

The fourth proportional to 459,445.96, 689,168.94 and 209,953 is: 314,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,445.96 : 689,168.94 = 209,953 : x
  2. Step 2: Convert to fraction form
    459,445.96/689,168.94 = 209,953/x
  3. Step 3: Cross multiply
    459,445.96x = 689,168.94 × 209,953
  4. Step 4: Simplify right side
    459,445.96x = 144,693,086,459.82
  5. Step 5: Solve for x
    x = 144,693,086,459.82/459,445.96
  6. Step 6: Final answer
    x = 314,929.50

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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.