Home / 386,968.93-533,987.85-217,170.25

Finding the Fourth Proportional to 386,968.93, 533,987.85 and 217,170.25

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Solution

The fourth proportional to 386,968.93, 533,987.85 and 217,170.25 is: 299,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,968.93 : 533,987.85 = 217,170.25 : x
  2. Step 2: Convert to fraction form
    386,968.93/533,987.85 = 217,170.25/x
  3. Step 3: Cross multiply
    386,968.93x = 533,987.85 × 217,170.25
  4. Step 4: Simplify right side
    386,968.93x = 115,966,274,881.46
  5. Step 5: Solve for x
    x = 115,966,274,881.46/386,968.93
  6. Step 6: Final answer
    x = 299,678.52

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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.