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Finding the Fourth Proportional to 281,575.53, 388,479.15 and 160,631.69

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Solution

The fourth proportional to 281,575.53, 388,479.15 and 160,631.69 is: 221,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,575.53 : 388,479.15 = 160,631.69 : x
  2. Step 2: Convert to fraction form
    281,575.53/388,479.15 = 160,631.69/x
  3. Step 3: Cross multiply
    281,575.53x = 388,479.15 × 160,631.69
  4. Step 4: Simplify right side
    281,575.53x = 62,402,060,451.87
  5. Step 5: Solve for x
    x = 62,402,060,451.87/281,575.53
  6. Step 6: Final answer
    x = 221,617.48

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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.