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Finding the Fourth Proportional to 326,076.10, 489,114.15 and 213,810.10

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Solution

The fourth proportional to 326,076.10, 489,114.15 and 213,810.10 is: 320,715.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,076.10 : 489,114.15 = 213,810.10 : x
  2. Step 2: Convert to fraction form
    326,076.10/489,114.15 = 213,810.10/x
  3. Step 3: Cross multiply
    326,076.10x = 489,114.15 × 213,810.10
  4. Step 4: Simplify right side
    326,076.10x = 104,577,545,322.92
  5. Step 5: Solve for x
    x = 104,577,545,322.92/326,076.10
  6. Step 6: Final answer
    x = 320,715.15

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Similar ratio
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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.