Home / 421,335.80-631,909.54-121,749.62

Finding the Fourth Proportional to 421,335.80, 631,909.54 and 121,749.62

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Solution

The fourth proportional to 421,335.80, 631,909.54 and 121,749.62 is: 182,597.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,335.80 : 631,909.54 = 121,749.62 : x
  2. Step 2: Convert to fraction form
    421,335.80/631,909.54 = 121,749.62/x
  3. Step 3: Cross multiply
    421,335.80x = 631,909.54 × 121,749.62
  4. Step 4: Simplify right side
    421,335.80x = 76,934,746,369.37
  5. Step 5: Solve for x
    x = 76,934,746,369.37/421,335.80
  6. Step 6: Final answer
    x = 182,597.22

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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.