Home / 386,966.90-533,985.03-217,168.22

Finding the Fourth Proportional to 386,966.90, 533,985.03 and 217,168.22

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Solution

The fourth proportional to 386,966.90, 533,985.03 and 217,168.22 is: 299,675.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,966.90 : 533,985.03 = 217,168.22 : x
  2. Step 2: Convert to fraction form
    386,966.90/533,985.03 = 217,168.22/x
  3. Step 3: Cross multiply
    386,966.90x = 533,985.03 × 217,168.22
  4. Step 4: Simplify right side
    386,966.90x = 115,964,577,385.91
  5. Step 5: Solve for x
    x = 115,964,577,385.91/386,966.90
  6. Step 6: Final answer
    x = 299,675.70

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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.