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Finding the Fourth Proportional to 308,695.73, 426,066.28 and 187,875.92

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Solution

The fourth proportional to 308,695.73, 426,066.28 and 187,875.92 is: 259,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,695.73 : 426,066.28 = 187,875.92 : x
  2. Step 2: Convert to fraction form
    308,695.73/426,066.28 = 187,875.92/x
  3. Step 3: Cross multiply
    308,695.73x = 426,066.28 × 187,875.92
  4. Step 4: Simplify right side
    308,695.73x = 80,047,594,931.45
  5. Step 5: Solve for x
    x = 80,047,594,931.45/308,695.73
  6. Step 6: Final answer
    x = 259,309.05

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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.