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Finding the Fourth Proportional to 319,458.10, 479,187.15 and 97,813.30

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Solution

The fourth proportional to 319,458.10, 479,187.15 and 97,813.30 is: 146,719.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,458.10 : 479,187.15 = 97,813.30 : x
  2. Step 2: Convert to fraction form
    319,458.10/479,187.15 = 97,813.30/x
  3. Step 3: Cross multiply
    319,458.10x = 479,187.15 × 97,813.30
  4. Step 4: Simplify right side
    319,458.10x = 46,870,876,459.10
  5. Step 5: Solve for x
    x = 46,870,876,459.10/319,458.10
  6. Step 6: Final answer
    x = 146,719.95

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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.