Home / 431,386,347.40-647,015,738.46-158,693,341.48

Finding the Fourth Proportional to 431,386,347.40, 647,015,738.46 and 158,693,341.48

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Solution

The fourth proportional to 431,386,347.40, 647,015,738.46 and 158,693,341.48 is: 238,016,548.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,386,347.40 : 647,015,738.46 = 158,693,341.48 : x
  2. Step 2: Convert to fraction form
    431,386,347.40/647,015,738.46 = 158,693,341.48/x
  3. Step 3: Cross multiply
    431,386,347.40x = 647,015,738.46 × 158,693,341.48
  4. Step 4: Simplify right side
    431,386,347.40x = 102,677,089,526,367,152
  5. Step 5: Solve for x
    x = 102,677,089,526,367,152/431,386,347.40
  6. Step 6: Final answer
    x = 238,016,548.61

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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.