Home / 315,020.37-472,445.78-115,341.80

Finding the Fourth Proportional to 315,020.37, 472,445.78 and 115,341.80

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Solution

The fourth proportional to 315,020.37, 472,445.78 and 115,341.80 is: 172,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,020.37 : 472,445.78 = 115,341.80 : x
  2. Step 2: Convert to fraction form
    315,020.37/472,445.78 = 115,341.80/x
  3. Step 3: Cross multiply
    315,020.37x = 472,445.78 × 115,341.80
  4. Step 4: Simplify right side
    315,020.37x = 54,492,746,667.60
  5. Step 5: Solve for x
    x = 54,492,746,667.60/315,020.37
  6. Step 6: Final answer
    x = 172,981.66

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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.