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Finding the Fourth Proportional to 315,594.58, 473,391.90 and 78,937.26

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Solution

The fourth proportional to 315,594.58, 473,391.90 and 78,937.26 is: 118,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,594.58 : 473,391.90 = 78,937.26 : x
  2. Step 2: Convert to fraction form
    315,594.58/473,391.90 = 78,937.26/x
  3. Step 3: Cross multiply
    315,594.58x = 473,391.90 × 78,937.26
  4. Step 4: Simplify right side
    315,594.58x = 37,368,259,492.19
  5. Step 5: Solve for x
    x = 37,368,259,492.19/315,594.58
  6. Step 6: Final answer
    x = 118,405.90

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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.