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Finding the Fourth Proportional to 315,918.60, 473,807.94 and 91,230.12

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Solution

The fourth proportional to 315,918.60, 473,807.94 and 91,230.12 is: 136,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,918.60 : 473,807.94 = 91,230.12 : x
  2. Step 2: Convert to fraction form
    315,918.60/473,807.94 = 91,230.12/x
  3. Step 3: Cross multiply
    315,918.60x = 473,807.94 × 91,230.12
  4. Step 4: Simplify right side
    315,918.60x = 43,225,555,223.15
  5. Step 5: Solve for x
    x = 43,225,555,223.15/315,918.60
  6. Step 6: Final answer
    x = 136,824.98

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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.