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Finding the Fourth Proportional to 489,622.83, 734,438.34 and 134,656.32

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Solution

The fourth proportional to 489,622.83, 734,438.34 and 134,656.32 is: 201,985.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,622.83 : 734,438.34 = 134,656.32 : x
  2. Step 2: Convert to fraction form
    489,622.83/734,438.34 = 134,656.32/x
  3. Step 3: Cross multiply
    489,622.83x = 734,438.34 × 134,656.32
  4. Step 4: Simplify right side
    489,622.83x = 98,896,766,885.45
  5. Step 5: Solve for x
    x = 98,896,766,885.45/489,622.83
  6. Step 6: Final answer
    x = 201,985.61

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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.