Home / 305,020,078.74-420,898,296.21-171,063,433.24

Finding the Fourth Proportional to 305,020,078.74, 420,898,296.21 and 171,063,433.24

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Solution

The fourth proportional to 305,020,078.74, 420,898,296.21 and 171,063,433.24 is: 236,051,042.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,020,078.74 : 420,898,296.21 = 171,063,433.24 : x
  2. Step 2: Convert to fraction form
    305,020,078.74/420,898,296.21 = 171,063,433.24/x
  3. Step 3: Cross multiply
    305,020,078.74x = 420,898,296.21 × 171,063,433.24
  4. Step 4: Simplify right side
    305,020,078.74x = 72,000,307,594,549,080
  5. Step 5: Solve for x
    x = 72,000,307,594,549,080/305,020,078.74
  6. Step 6: Final answer
    x = 236,051,042.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.