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Finding the Fourth Proportional to 459,728.73, 634,370.54 and 255,728.14

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Solution

The fourth proportional to 459,728.73, 634,370.54 and 255,728.14 is: 352,874.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,728.73 : 634,370.54 = 255,728.14 : x
  2. Step 2: Convert to fraction form
    459,728.73/634,370.54 = 255,728.14/x
  3. Step 3: Cross multiply
    459,728.73x = 634,370.54 × 255,728.14
  4. Step 4: Simplify right side
    459,728.73x = 162,226,395,400.43
  5. Step 5: Solve for x
    x = 162,226,395,400.43/459,728.73
  6. Step 6: Final answer
    x = 352,874.17

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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.