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Finding the Fourth Proportional to 345,461.54, 518,143.10 and 108,798.07

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Solution

The fourth proportional to 345,461.54, 518,143.10 and 108,798.07 is: 163,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,461.54 : 518,143.10 = 108,798.07 : x
  2. Step 2: Convert to fraction form
    345,461.54/518,143.10 = 108,798.07/x
  3. Step 3: Cross multiply
    345,461.54x = 518,143.10 × 108,798.07
  4. Step 4: Simplify right side
    345,461.54x = 56,372,968,240.45
  5. Step 5: Solve for x
    x = 56,372,968,240.45/345,461.54
  6. Step 6: Final answer
    x = 163,181.60

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1.5x scale

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.