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Finding the Fourth Proportional to 459,991.76, 634,788.56 and 256,038.28

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Solution

The fourth proportional to 459,991.76, 634,788.56 and 256,038.28 is: 353,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,991.76 : 634,788.56 = 256,038.28 : x
  2. Step 2: Convert to fraction form
    459,991.76/634,788.56 = 256,038.28/x
  3. Step 3: Cross multiply
    459,991.76x = 634,788.56 × 256,038.28
  4. Step 4: Simplify right side
    459,991.76x = 162,530,171,066.08
  5. Step 5: Solve for x
    x = 162,530,171,066.08/459,991.76
  6. Step 6: Final answer
    x = 353,332.79

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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.