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Finding the Fourth Proportional to 281,841.79, 388,940.76 and 152,780.77

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Solution

The fourth proportional to 281,841.79, 388,940.76 and 152,780.77 is: 210,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,841.79 : 388,940.76 = 152,780.77 : x
  2. Step 2: Convert to fraction form
    281,841.79/388,940.76 = 152,780.77/x
  3. Step 3: Cross multiply
    281,841.79x = 388,940.76 × 152,780.77
  4. Step 4: Simplify right side
    281,841.79x = 59,422,666,088.58
  5. Step 5: Solve for x
    x = 59,422,666,088.58/281,841.79
  6. Step 6: Final answer
    x = 210,836.96

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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.