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Finding the Fourth Proportional to 386,892.65, 533,928.53 and 214,810.62

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Solution

The fourth proportional to 386,892.65, 533,928.53 and 214,810.62 is: 296,447.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,892.65 : 533,928.53 = 214,810.62 : x
  2. Step 2: Convert to fraction form
    386,892.65/533,928.53 = 214,810.62/x
  3. Step 3: Cross multiply
    386,892.65x = 533,928.53 × 214,810.62
  4. Step 4: Simplify right side
    386,892.65x = 114,693,518,564.99
  5. Step 5: Solve for x
    x = 114,693,518,564.99/386,892.65
  6. Step 6: Final answer
    x = 296,447.91

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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.