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Finding the Fourth Proportional to 258,854.55, 357,218.55 and 145,677.30

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Solution

The fourth proportional to 258,854.55, 357,218.55 and 145,677.30 is: 201,034.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,854.55 : 357,218.55 = 145,677.30 : x
  2. Step 2: Convert to fraction form
    258,854.55/357,218.55 = 145,677.30/x
  3. Step 3: Cross multiply
    258,854.55x = 357,218.55 × 145,677.30
  4. Step 4: Simplify right side
    258,854.55x = 52,038,633,873.92
  5. Step 5: Solve for x
    x = 52,038,633,873.92/258,854.55
  6. Step 6: Final answer
    x = 201,034.26

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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.