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Finding the Fourth Proportional to 145,355.68, 217,991.40 and 56,589.40

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Solution

The fourth proportional to 145,355.68, 217,991.40 and 56,589.40 is: 84,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,355.68 : 217,991.40 = 56,589.40 : x
  2. Step 2: Convert to fraction form
    145,355.68/217,991.40 = 56,589.40/x
  3. Step 3: Cross multiply
    145,355.68x = 217,991.40 × 56,589.40
  4. Step 4: Simplify right side
    145,355.68x = 12,336,002,531.16
  5. Step 5: Solve for x
    x = 12,336,002,531.16/145,355.68
  6. Step 6: Final answer
    x = 84,867.70

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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.