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Finding the Fourth Proportional to 489,705.16, 734,461.02 and 134,627.56

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Solution

The fourth proportional to 489,705.16, 734,461.02 and 134,627.56 is: 201,914.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,705.16 : 734,461.02 = 134,627.56 : x
  2. Step 2: Convert to fraction form
    489,705.16/734,461.02 = 134,627.56/x
  3. Step 3: Cross multiply
    489,705.16x = 734,461.02 × 134,627.56
  4. Step 4: Simplify right side
    489,705.16x = 98,878,695,037.71
  5. Step 5: Solve for x
    x = 98,878,695,037.71/489,705.16
  6. Step 6: Final answer
    x = 201,914.75

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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.