Home / 280,640.66-421,127.08-103,272.23

Finding the Fourth Proportional to 280,640.66, 421,127.08 and 103,272.23

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Solution

The fourth proportional to 280,640.66, 421,127.08 and 103,272.23 is: 154,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,640.66 : 421,127.08 = 103,272.23 : x
  2. Step 2: Convert to fraction form
    280,640.66/421,127.08 = 103,272.23/x
  3. Step 3: Cross multiply
    280,640.66x = 421,127.08 × 103,272.23
  4. Step 4: Simplify right side
    280,640.66x = 43,490,733,459.63
  5. Step 5: Solve for x
    x = 43,490,733,459.63/280,640.66
  6. Step 6: Final answer
    x = 154,969.47

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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.