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Finding the Fourth Proportional to 316,784.61, 475,077.51 and 103,503.94

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Solution

The fourth proportional to 316,784.61, 475,077.51 and 103,503.94 is: 155,223.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,784.61 : 475,077.51 = 103,503.94 : x
  2. Step 2: Convert to fraction form
    316,784.61/475,077.51 = 103,503.94/x
  3. Step 3: Cross multiply
    316,784.61x = 475,077.51 × 103,503.94
  4. Step 4: Simplify right side
    316,784.61x = 49,172,392,902.70
  5. Step 5: Solve for x
    x = 49,172,392,902.70/316,784.61
  6. Step 6: Final answer
    x = 155,223.43

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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.