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Finding the Fourth Proportional to 280,395.42, 387,084.42 and 173,024.58

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Solution

The fourth proportional to 280,395.42, 387,084.42 and 173,024.58 is: 238,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,395.42 : 387,084.42 = 173,024.58 : x
  2. Step 2: Convert to fraction form
    280,395.42/387,084.42 = 173,024.58/x
  3. Step 3: Cross multiply
    280,395.42x = 387,084.42 × 173,024.58
  4. Step 4: Simplify right side
    280,395.42x = 66,975,119,195.04
  5. Step 5: Solve for x
    x = 66,975,119,195.04/280,395.42
  6. Step 6: Final answer
    x = 238,859.53

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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.