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Finding the Fourth Proportional to 280,630.56, 421,008.48 and 147,573.60

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Solution

The fourth proportional to 280,630.56, 421,008.48 and 147,573.60 is: 221,393.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,630.56 : 421,008.48 = 147,573.60 : x
  2. Step 2: Convert to fraction form
    280,630.56/421,008.48 = 147,573.60/x
  3. Step 3: Cross multiply
    280,630.56x = 421,008.48 × 147,573.60
  4. Step 4: Simplify right side
    280,630.56x = 62,129,737,024.13
  5. Step 5: Solve for x
    x = 62,129,737,024.13/280,630.56
  6. Step 6: Final answer
    x = 221,393.34

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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.