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Finding the Fourth Proportional to 281,071.07, 421,643.55 and 147,958.63

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Solution

The fourth proportional to 281,071.07, 421,643.55 and 147,958.63 is: 221,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,071.07 : 421,643.55 = 147,958.63 : x
  2. Step 2: Convert to fraction form
    281,071.07/421,643.55 = 147,958.63/x
  3. Step 3: Cross multiply
    281,071.07x = 421,643.55 × 147,958.63
  4. Step 4: Simplify right side
    281,071.07x = 62,385,803,046.55
  5. Step 5: Solve for x
    x = 62,385,803,046.55/281,071.07
  6. Step 6: Final answer
    x = 221,957.40

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1.5x scale

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.