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Finding the Fourth Proportional to 258,832.80, 357,188.54 and 145,655.55

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Solution

The fourth proportional to 258,832.80, 357,188.54 and 145,655.55 is: 201,004.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,832.80 : 357,188.54 = 145,655.55 : x
  2. Step 2: Convert to fraction form
    258,832.80/357,188.54 = 145,655.55/x
  3. Step 3: Cross multiply
    258,832.80x = 357,188.54 × 145,655.55
  4. Step 4: Simplify right side
    258,832.80x = 52,026,492,519.12
  5. Step 5: Solve for x
    x = 52,026,492,519.12/258,832.80
  6. Step 6: Final answer
    x = 201,004.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.