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Finding the Fourth Proportional to 305,001.18, 420,894.45 and 177,668.55

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Solution

The fourth proportional to 305,001.18, 420,894.45 and 177,668.55 is: 245,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,001.18 : 420,894.45 = 177,668.55 : x
  2. Step 2: Convert to fraction form
    305,001.18/420,894.45 = 177,668.55/x
  3. Step 3: Cross multiply
    305,001.18x = 420,894.45 × 177,668.55
  4. Step 4: Simplify right side
    305,001.18x = 74,779,706,634.55
  5. Step 5: Solve for x
    x = 74,779,706,634.55/305,001.18
  6. Step 6: Final answer
    x = 245,178.42

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1.5x scale

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.