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Finding the Fourth Proportional to 281,483.76, 388,443.60 and 154,159.32

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Solution

The fourth proportional to 281,483.76, 388,443.60 and 154,159.32 is: 212,737.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,483.76 : 388,443.60 = 154,159.32 : x
  2. Step 2: Convert to fraction form
    281,483.76/388,443.60 = 154,159.32/x
  3. Step 3: Cross multiply
    281,483.76x = 388,443.60 × 154,159.32
  4. Step 4: Simplify right side
    281,483.76x = 59,882,201,234.35
  5. Step 5: Solve for x
    x = 59,882,201,234.35/281,483.76
  6. Step 6: Final answer
    x = 212,737.68

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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.