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Finding the Fourth Proportional to 281,701.77, 388,751.51 and 154,374.63

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Solution

The fourth proportional to 281,701.77, 388,751.51 and 154,374.63 is: 213,038.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,701.77 : 388,751.51 = 154,374.63 : x
  2. Step 2: Convert to fraction form
    281,701.77/388,751.51 = 154,374.63/x
  3. Step 3: Cross multiply
    281,701.77x = 388,751.51 × 154,374.63
  4. Step 4: Simplify right side
    281,701.77x = 60,013,370,518.19
  5. Step 5: Solve for x
    x = 60,013,370,518.19/281,701.77
  6. Step 6: Final answer
    x = 213,038.67

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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.