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Finding the Fourth Proportional to 287,063.88, 430,639.56 and 146,775.12

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Solution

The fourth proportional to 287,063.88, 430,639.56 and 146,775.12 is: 220,185.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,063.88 : 430,639.56 = 146,775.12 : x
  2. Step 2: Convert to fraction form
    287,063.88/430,639.56 = 146,775.12/x
  3. Step 3: Cross multiply
    287,063.88x = 430,639.56 × 146,775.12
  4. Step 4: Simplify right side
    287,063.88x = 63,207,173,095.75
  5. Step 5: Solve for x
    x = 63,207,173,095.75/287,063.88
  6. Step 6: Final answer
    x = 220,185.04

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1.5x scale

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.