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Finding the Fourth Proportional to 258,833.55, 357,189.57 and 145,656.30

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Solution

The fourth proportional to 258,833.55, 357,189.57 and 145,656.30 is: 201,005.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,833.55 : 357,189.57 = 145,656.30 : x
  2. Step 2: Convert to fraction form
    258,833.55/357,189.57 = 145,656.30/x
  3. Step 3: Cross multiply
    258,833.55x = 357,189.57 × 145,656.30
  4. Step 4: Simplify right side
    258,833.55x = 52,026,911,164.79
  5. Step 5: Solve for x
    x = 52,026,911,164.79/258,833.55
  6. Step 6: Final answer
    x = 201,005.28

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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.