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Finding the Fourth Proportional to 238,426.70, 357,640.05 and 72,214.70

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Solution

The fourth proportional to 238,426.70, 357,640.05 and 72,214.70 is: 108,322.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,426.70 : 357,640.05 = 72,214.70 : x
  2. Step 2: Convert to fraction form
    238,426.70/357,640.05 = 72,214.70/x
  3. Step 3: Cross multiply
    238,426.70x = 357,640.05 × 72,214.70
  4. Step 4: Simplify right side
    238,426.70x = 25,826,868,918.74
  5. Step 5: Solve for x
    x = 25,826,868,918.74/238,426.70
  6. Step 6: Final answer
    x = 108,322.05

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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.