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Finding the Fourth Proportional to 316,671.88, 474,963.66 and 79,999.88

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Solution

The fourth proportional to 316,671.88, 474,963.66 and 79,999.88 is: 119,988.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,671.88 : 474,963.66 = 79,999.88 : x
  2. Step 2: Convert to fraction form
    316,671.88/474,963.66 = 79,999.88/x
  3. Step 3: Cross multiply
    316,671.88x = 474,963.66 × 79,999.88
  4. Step 4: Simplify right side
    316,671.88x = 37,997,035,804.36
  5. Step 5: Solve for x
    x = 37,997,035,804.36/316,671.88
  6. Step 6: Final answer
    x = 119,988.66

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1.5x scale

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.