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Finding the Fourth Proportional to 451,639.76, 623,261.90 and 260,653.16

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Solution

The fourth proportional to 451,639.76, 623,261.90 and 260,653.16 is: 359,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,639.76 : 623,261.90 = 260,653.16 : x
  2. Step 2: Convert to fraction form
    451,639.76/623,261.90 = 260,653.16/x
  3. Step 3: Cross multiply
    451,639.76x = 623,261.90 × 260,653.16
  4. Step 4: Simplify right side
    451,639.76x = 162,455,179,323.03
  5. Step 5: Solve for x
    x = 162,455,179,323.03/451,639.76
  6. Step 6: Final answer
    x = 359,700.80

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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.