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Finding the Fourth Proportional to 258,956.68, 357,366.90 and 145,783.48

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Solution

The fourth proportional to 258,956.68, 357,366.90 and 145,783.48 is: 201,184.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,956.68 : 357,366.90 = 145,783.48 : x
  2. Step 2: Convert to fraction form
    258,956.68/357,366.90 = 145,783.48/x
  3. Step 3: Cross multiply
    258,956.68x = 357,366.90 × 145,783.48
  4. Step 4: Simplify right side
    258,956.68x = 52,098,190,318.81
  5. Step 5: Solve for x
    x = 52,098,190,318.81/258,956.68
  6. Step 6: Final answer
    x = 201,184.96

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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.