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Finding the Fourth Proportional to 319,704.80, 478,925.40 and 162,046.40

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Solution

The fourth proportional to 319,704.80, 478,925.40 and 162,046.40 is: 242,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,704.80 : 478,925.40 = 162,046.40 : x
  2. Step 2: Convert to fraction form
    319,704.80/478,925.40 = 162,046.40/x
  3. Step 3: Cross multiply
    319,704.80x = 478,925.40 × 162,046.40
  4. Step 4: Simplify right side
    319,704.80x = 77,608,136,938.56
  5. Step 5: Solve for x
    x = 77,608,136,938.56/319,704.80
  6. Step 6: Final answer
    x = 242,749.36

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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.