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Finding the Fourth Proportional to 281,578.52, 388,588.04 and 154,254.08

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Solution

The fourth proportional to 281,578.52, 388,588.04 and 154,254.08 is: 212,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,578.52 : 388,588.04 = 154,254.08 : x
  2. Step 2: Convert to fraction form
    281,578.52/388,588.04 = 154,254.08/x
  3. Step 3: Cross multiply
    281,578.52x = 388,588.04 × 154,254.08
  4. Step 4: Simplify right side
    281,578.52x = 59,941,290,609.20
  5. Step 5: Solve for x
    x = 59,941,290,609.20/281,578.52
  6. Step 6: Final answer
    x = 212,875.93

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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.