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Finding the Fourth Proportional to 314,991.15, 472,488.62 and 78,333.84

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Solution

The fourth proportional to 314,991.15, 472,488.62 and 78,333.84 is: 117,501.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,991.15 : 472,488.62 = 78,333.84 : x
  2. Step 2: Convert to fraction form
    314,991.15/472,488.62 = 78,333.84/x
  3. Step 3: Cross multiply
    314,991.15x = 472,488.62 × 78,333.84
  4. Step 4: Simplify right side
    314,991.15x = 37,011,847,569.23
  5. Step 5: Solve for x
    x = 37,011,847,569.23/314,991.15
  6. Step 6: Final answer
    x = 117,501.23

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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.