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Finding the Fourth Proportional to 281,270.95, 388,153.91 and 153,946.55

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Solution

The fourth proportional to 281,270.95, 388,153.91 and 153,946.55 is: 212,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,270.95 : 388,153.91 = 153,946.55 : x
  2. Step 2: Convert to fraction form
    281,270.95/388,153.91 = 153,946.55/x
  3. Step 3: Cross multiply
    281,270.95x = 388,153.91 × 153,946.55
  4. Step 4: Simplify right side
    281,270.95x = 59,754,956,668.76
  5. Step 5: Solve for x
    x = 59,754,956,668.76/281,270.95
  6. Step 6: Final answer
    x = 212,446.25

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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.