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Finding the Fourth Proportional to 479,662.50, 719,368.45 and 142,612.38

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Solution

The fourth proportional to 479,662.50, 719,368.45 and 142,612.38 is: 213,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,662.50 : 719,368.45 = 142,612.38 : x
  2. Step 2: Convert to fraction form
    479,662.50/719,368.45 = 142,612.38/x
  3. Step 3: Cross multiply
    479,662.50x = 719,368.45 × 142,612.38
  4. Step 4: Simplify right side
    479,662.50x = 102,590,846,038.35
  5. Step 5: Solve for x
    x = 102,590,846,038.35/479,662.50
  6. Step 6: Final answer
    x = 213,881.32

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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.