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Finding the Fourth Proportional to 389,061.52, 536,904.86 and 210,213.52

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Solution

The fourth proportional to 389,061.52, 536,904.86 and 210,213.52 is: 290,094.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,061.52 : 536,904.86 = 210,213.52 : x
  2. Step 2: Convert to fraction form
    389,061.52/536,904.86 = 210,213.52/x
  3. Step 3: Cross multiply
    389,061.52x = 536,904.86 × 210,213.52
  4. Step 4: Simplify right side
    389,061.52x = 112,864,660,525.71
  5. Step 5: Solve for x
    x = 112,864,660,525.71/389,061.52
  6. Step 6: Final answer
    x = 290,094.64

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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.