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Finding the Fourth Proportional to 423,958.07, 635,800.98 and 139,582.46

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Solution

The fourth proportional to 423,958.07, 635,800.98 and 139,582.46 is: 209,328.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,958.07 : 635,800.98 = 139,582.46 : x
  2. Step 2: Convert to fraction form
    423,958.07/635,800.98 = 139,582.46/x
  3. Step 3: Cross multiply
    423,958.07x = 635,800.98 × 139,582.46
  4. Step 4: Simplify right side
    423,958.07x = 88,746,666,971.75
  5. Step 5: Solve for x
    x = 88,746,666,971.75/423,958.07
  6. Step 6: Final answer
    x = 209,328.88

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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.