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Finding the Fourth Proportional to 340,652.32, 510,975.90 and 87,911.32

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Solution

The fourth proportional to 340,652.32, 510,975.90 and 87,911.32 is: 131,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,652.32 : 510,975.90 = 87,911.32 : x
  2. Step 2: Convert to fraction form
    340,652.32/510,975.90 = 87,911.32/x
  3. Step 3: Cross multiply
    340,652.32x = 510,975.90 × 87,911.32
  4. Step 4: Simplify right side
    340,652.32x = 44,920,565,857.19
  5. Step 5: Solve for x
    x = 44,920,565,857.19/340,652.32
  6. Step 6: Final answer
    x = 131,866.31

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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.