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Finding the Fourth Proportional to 380,658.18, 525,287.61 and 210,882.18

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Solution

The fourth proportional to 380,658.18, 525,287.61 and 210,882.18 is: 291,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,658.18 : 525,287.61 = 210,882.18 : x
  2. Step 2: Convert to fraction form
    380,658.18/525,287.61 = 210,882.18/x
  3. Step 3: Cross multiply
    380,658.18x = 525,287.61 × 210,882.18
  4. Step 4: Simplify right side
    380,658.18x = 110,773,796,323.79
  5. Step 5: Solve for x
    x = 110,773,796,323.79/380,658.18
  6. Step 6: Final answer
    x = 291,005.95

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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.