Home / 281,787.20-423,056.10-163,543.40

Finding the Fourth Proportional to 281,787.20, 423,056.10 and 163,543.40

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Solution

The fourth proportional to 281,787.20, 423,056.10 and 163,543.40 is: 245,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,787.20 : 423,056.10 = 163,543.40 : x
  2. Step 2: Convert to fraction form
    281,787.20/423,056.10 = 163,543.40/x
  3. Step 3: Cross multiply
    281,787.20x = 423,056.10 × 163,543.40
  4. Step 4: Simplify right side
    281,787.20x = 69,188,032,984.74
  5. Step 5: Solve for x
    x = 69,188,032,984.74/281,787.20
  6. Step 6: Final answer
    x = 245,532.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.