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Finding the Fourth Proportional to 281,159.60, 388,009.80 and 160,318.64

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Solution

The fourth proportional to 281,159.60, 388,009.80 and 160,318.64 is: 221,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,159.60 : 388,009.80 = 160,318.64 : x
  2. Step 2: Convert to fraction form
    281,159.60/388,009.80 = 160,318.64/x
  3. Step 3: Cross multiply
    281,159.60x = 388,009.80 × 160,318.64
  4. Step 4: Simplify right side
    281,159.60x = 62,205,203,442.67
  5. Step 5: Solve for x
    x = 62,205,203,442.67/281,159.60
  6. Step 6: Final answer
    x = 221,245.17

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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.