Home / 402,409,347.20-603,614,020.80-143,633,009.60

Finding the Fourth Proportional to 402,409,347.20, 603,614,020.80 and 143,633,009.60

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Solution

The fourth proportional to 402,409,347.20, 603,614,020.80 and 143,633,009.60 is: 215,449,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,409,347.20 : 603,614,020.80 = 143,633,009.60 : x
  2. Step 2: Convert to fraction form
    402,409,347.20/603,614,020.80 = 143,633,009.60/x
  3. Step 3: Cross multiply
    402,409,347.20x = 603,614,020.80 × 143,633,009.60
  4. Step 4: Simplify right side
    402,409,347.20x = 86,698,898,444,260,992
  5. Step 5: Solve for x
    x = 86,698,898,444,260,992/402,409,347.20
  6. Step 6: Final answer
    x = 215,449,514.40

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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.