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Finding the Fourth Proportional to 492,386.40, 738,579.60 and 159,962.40

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Solution

The fourth proportional to 492,386.40, 738,579.60 and 159,962.40 is: 239,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,386.40 : 738,579.60 = 159,962.40 : x
  2. Step 2: Convert to fraction form
    492,386.40/738,579.60 = 159,962.40/x
  3. Step 3: Cross multiply
    492,386.40x = 738,579.60 × 159,962.40
  4. Step 4: Simplify right side
    492,386.40x = 118,144,965,407.04
  5. Step 5: Solve for x
    x = 118,144,965,407.04/492,386.40
  6. Step 6: Final answer
    x = 239,943.60

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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.