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Finding the Fourth Proportional to 303,509.40, 418,840.68 and 167,543.40

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Solution

The fourth proportional to 303,509.40, 418,840.68 and 167,543.40 is: 231,208.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,509.40 : 418,840.68 = 167,543.40 : x
  2. Step 2: Convert to fraction form
    303,509.40/418,840.68 = 167,543.40/x
  3. Step 3: Cross multiply
    303,509.40x = 418,840.68 × 167,543.40
  4. Step 4: Simplify right side
    303,509.40x = 70,173,991,585.51
  5. Step 5: Solve for x
    x = 70,173,991,585.51/303,509.40
  6. Step 6: Final answer
    x = 231,208.63

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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.