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Finding the Fourth Proportional to 371,585.47, 512,700.09 and 218,630.32

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Solution

The fourth proportional to 371,585.47, 512,700.09 and 218,630.32 is: 301,658.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,585.47 : 512,700.09 = 218,630.32 : x
  2. Step 2: Convert to fraction form
    371,585.47/512,700.09 = 218,630.32/x
  3. Step 3: Cross multiply
    371,585.47x = 512,700.09 × 218,630.32
  4. Step 4: Simplify right side
    371,585.47x = 112,091,784,740.73
  5. Step 5: Solve for x
    x = 112,091,784,740.73/371,585.47
  6. Step 6: Final answer
    x = 301,658.15

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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.