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Finding the Fourth Proportional to 485,590.40, 670,117.56 and 270,743.84

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Solution

The fourth proportional to 485,590.40, 670,117.56 and 270,743.84 is: 373,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,590.40 : 670,117.56 = 270,743.84 : x
  2. Step 2: Convert to fraction form
    485,590.40/670,117.56 = 270,743.84/x
  3. Step 3: Cross multiply
    485,590.40x = 670,117.56 × 270,743.84
  4. Step 4: Simplify right side
    485,590.40x = 181,430,201,445.83
  5. Step 5: Solve for x
    x = 181,430,201,445.83/485,590.40
  6. Step 6: Final answer
    x = 373,628.06

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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.