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Finding the Fourth Proportional to 402,816.73, 555,875.98 and 221,528.66

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Solution

The fourth proportional to 402,816.73, 555,875.98 and 221,528.66 is: 305,703.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,816.73 : 555,875.98 = 221,528.66 : x
  2. Step 2: Convert to fraction form
    402,816.73/555,875.98 = 221,528.66/x
  3. Step 3: Cross multiply
    402,816.73x = 555,875.98 × 221,528.66
  4. Step 4: Simplify right side
    402,816.73x = 123,142,458,196.21
  5. Step 5: Solve for x
    x = 123,142,458,196.21/402,816.73
  6. Step 6: Final answer
    x = 305,703.44

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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.