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Finding the Fourth Proportional to 316,836.29, 475,204.74 and 103,602.71

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Solution

The fourth proportional to 316,836.29, 475,204.74 and 103,602.71 is: 155,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,836.29 : 475,204.74 = 103,602.71 : x
  2. Step 2: Convert to fraction form
    316,836.29/475,204.74 = 103,602.71/x
  3. Step 3: Cross multiply
    316,836.29x = 475,204.74 × 103,602.71
  4. Step 4: Simplify right side
    316,836.29x = 49,232,496,492.82
  5. Step 5: Solve for x
    x = 49,232,496,492.82/316,836.29
  6. Step 6: Final answer
    x = 155,387.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.