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Finding the Fourth Proportional to 425,301.84, 638,036.60 and 121,698.86

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Solution

The fourth proportional to 425,301.84, 638,036.60 and 121,698.86 is: 182,572.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,301.84 : 638,036.60 = 121,698.86 : x
  2. Step 2: Convert to fraction form
    425,301.84/638,036.60 = 121,698.86/x
  3. Step 3: Cross multiply
    425,301.84x = 638,036.60 × 121,698.86
  4. Step 4: Simplify right side
    425,301.84x = 77,648,323,059.60
  5. Step 5: Solve for x
    x = 77,648,323,059.60/425,301.84
  6. Step 6: Final answer
    x = 182,572.27

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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.