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Finding the Fourth Proportional to 319,104.40, 478,656.60 and 194,688.40

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Solution

The fourth proportional to 319,104.40, 478,656.60 and 194,688.40 is: 292,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,104.40 : 478,656.60 = 194,688.40 : x
  2. Step 2: Convert to fraction form
    319,104.40/478,656.60 = 194,688.40/x
  3. Step 3: Cross multiply
    319,104.40x = 478,656.60 × 194,688.40
  4. Step 4: Simplify right side
    319,104.40x = 93,188,887,603.44
  5. Step 5: Solve for x
    x = 93,188,887,603.44/319,104.40
  6. Step 6: Final answer
    x = 292,032.60

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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.