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Finding the Fourth Proportional to 451,643.40, 623,223 and 260,718.30

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Solution

The fourth proportional to 451,643.40, 623,223 and 260,718.30 is: 359,765.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,643.40 : 623,223 = 260,718.30 : x
  2. Step 2: Convert to fraction form
    451,643.40/623,223 = 260,718.30/x
  3. Step 3: Cross multiply
    451,643.40x = 623,223 × 260,718.30
  4. Step 4: Simplify right side
    451,643.40x = 162,485,641,080.90
  5. Step 5: Solve for x
    x = 162,485,641,080.90/451,643.40
  6. Step 6: Final answer
    x = 359,765.34

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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.