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Finding the Fourth Proportional to 325,851.70, 489,214.95 and 208,045.30

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Solution

The fourth proportional to 325,851.70, 489,214.95 and 208,045.30 is: 312,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,851.70 : 489,214.95 = 208,045.30 : x
  2. Step 2: Convert to fraction form
    325,851.70/489,214.95 = 208,045.30/x
  3. Step 3: Cross multiply
    325,851.70x = 489,214.95 × 208,045.30
  4. Step 4: Simplify right side
    325,851.70x = 101,778,871,037.24
  5. Step 5: Solve for x
    x = 101,778,871,037.24/325,851.70
  6. Step 6: Final answer
    x = 312,347.22

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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.