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Finding the Fourth Proportional to 307,584.64, 424,470 and 171,630.88

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Solution

The fourth proportional to 307,584.64, 424,470 and 171,630.88 is: 236,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,584.64 : 424,470 = 171,630.88 : x
  2. Step 2: Convert to fraction form
    307,584.64/424,470 = 171,630.88/x
  3. Step 3: Cross multiply
    307,584.64x = 424,470 × 171,630.88
  4. Step 4: Simplify right side
    307,584.64x = 72,852,159,633.60
  5. Step 5: Solve for x
    x = 72,852,159,633.60/307,584.64
  6. Step 6: Final answer
    x = 236,852.40

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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.