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Finding the Fourth Proportional to 258,000.80, 386,871.60 and 117,600.80

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Solution

The fourth proportional to 258,000.80, 386,871.60 and 117,600.80 is: 176,342.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,000.80 : 386,871.60 = 117,600.80 : x
  2. Step 2: Convert to fraction form
    258,000.80/386,871.60 = 117,600.80/x
  3. Step 3: Cross multiply
    258,000.80x = 386,871.60 × 117,600.80
  4. Step 4: Simplify right side
    258,000.80x = 45,496,409,657.28
  5. Step 5: Solve for x
    x = 45,496,409,657.28/258,000.80
  6. Step 6: Final answer
    x = 176,342.13

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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.