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Finding the Fourth Proportional to 288,809.72, 398,555.34 and 167,953.40

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Solution

The fourth proportional to 288,809.72, 398,555.34 and 167,953.40 is: 231,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,809.72 : 398,555.34 = 167,953.40 : x
  2. Step 2: Convert to fraction form
    288,809.72/398,555.34 = 167,953.40/x
  3. Step 3: Cross multiply
    288,809.72x = 398,555.34 × 167,953.40
  4. Step 4: Simplify right side
    288,809.72x = 66,938,724,441.16
  5. Step 5: Solve for x
    x = 66,938,724,441.16/288,809.72
  6. Step 6: Final answer
    x = 231,774.49

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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.