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Finding the Fourth Proportional to 280,325.16, 387,048.96 and 173,040.84

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Solution

The fourth proportional to 280,325.16, 387,048.96 and 173,040.84 is: 238,919.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,325.16 : 387,048.96 = 173,040.84 : x
  2. Step 2: Convert to fraction form
    280,325.16/387,048.96 = 173,040.84/x
  3. Step 3: Cross multiply
    280,325.16x = 387,048.96 × 173,040.84
  4. Step 4: Simplify right side
    280,325.16x = 66,975,277,159.53
  5. Step 5: Solve for x
    x = 66,975,277,159.53/280,325.16
  6. Step 6: Final answer
    x = 238,919.96

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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.