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Finding the Fourth Proportional to 319,480.10, 479,220.15 and 97,835.30

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Solution

The fourth proportional to 319,480.10, 479,220.15 and 97,835.30 is: 146,752.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,480.10 : 479,220.15 = 97,835.30 : x
  2. Step 2: Convert to fraction form
    319,480.10/479,220.15 = 97,835.30/x
  3. Step 3: Cross multiply
    319,480.10x = 479,220.15 × 97,835.30
  4. Step 4: Simplify right side
    319,480.10x = 46,884,647,141.30
  5. Step 5: Solve for x
    x = 46,884,647,141.30/319,480.10
  6. Step 6: Final answer
    x = 146,752.95

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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.