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Finding the Fourth Proportional to 319,788,908.60, 479,683,362.90 and 296,830,657.40

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Solution

The fourth proportional to 319,788,908.60, 479,683,362.90 and 296,830,657.40 is: 445,245,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,788,908.60 : 479,683,362.90 = 296,830,657.40 : x
  2. Step 2: Convert to fraction form
    319,788,908.60/479,683,362.90 = 296,830,657.40/x
  3. Step 3: Cross multiply
    319,788,908.60x = 479,683,362.90 × 296,830,657.40
  4. Step 4: Simplify right side
    319,788,908.60x = 142,384,727,953,449,744
  5. Step 5: Solve for x
    x = 142,384,727,953,449,744/319,788,908.60
  6. Step 6: Final answer
    x = 445,245,986.10

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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.