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Finding the Fourth Proportional to 315,256.80, 472,885.20 and 310,072.80

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Solution

The fourth proportional to 315,256.80, 472,885.20 and 310,072.80 is: 465,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,256.80 : 472,885.20 = 310,072.80 : x
  2. Step 2: Convert to fraction form
    315,256.80/472,885.20 = 310,072.80/x
  3. Step 3: Cross multiply
    315,256.80x = 472,885.20 × 310,072.80
  4. Step 4: Simplify right side
    315,256.80x = 146,628,838,042.56
  5. Step 5: Solve for x
    x = 146,628,838,042.56/315,256.80
  6. Step 6: Final answer
    x = 465,109.20

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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.