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Finding the Fourth Proportional to 310,401.90, 465,602.85 and 276,940.80

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Solution

The fourth proportional to 310,401.90, 465,602.85 and 276,940.80 is: 415,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,401.90 : 465,602.85 = 276,940.80 : x
  2. Step 2: Convert to fraction form
    310,401.90/465,602.85 = 276,940.80/x
  3. Step 3: Cross multiply
    310,401.90x = 465,602.85 × 276,940.80
  4. Step 4: Simplify right side
    310,401.90x = 128,944,425,761.28
  5. Step 5: Solve for x
    x = 128,944,425,761.28/310,401.90
  6. Step 6: Final answer
    x = 415,411.20

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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.