Home / 281,255.34-388,130.07-153,930.63

Finding the Fourth Proportional to 281,255.34, 388,130.07 and 153,930.63

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Solution

The fourth proportional to 281,255.34, 388,130.07 and 153,930.63 is: 212,423.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,255.34 : 388,130.07 = 153,930.63 : x
  2. Step 2: Convert to fraction form
    281,255.34/388,130.07 = 153,930.63/x
  3. Step 3: Cross multiply
    281,255.34x = 388,130.07 × 153,930.63
  4. Step 4: Simplify right side
    281,255.34x = 59,745,106,197.04
  5. Step 5: Solve for x
    x = 59,745,106,197.04/281,255.34
  6. Step 6: Final answer
    x = 212,423.01

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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.