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Finding the Fourth Proportional to 318,970.32, 439,883.36 and 232,792.80

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Solution

The fourth proportional to 318,970.32, 439,883.36 and 232,792.80 is: 321,038.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,970.32 : 439,883.36 = 232,792.80 : x
  2. Step 2: Convert to fraction form
    318,970.32/439,883.36 = 232,792.80/x
  3. Step 3: Cross multiply
    318,970.32x = 439,883.36 × 232,792.80
  4. Step 4: Simplify right side
    318,970.32x = 102,401,677,725.84
  5. Step 5: Solve for x
    x = 102,401,677,725.84/318,970.32
  6. Step 6: Final answer
    x = 321,038.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.