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Finding the Fourth Proportional to 303,386.40, 418,670.46 and 167,421.60

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Solution

The fourth proportional to 303,386.40, 418,670.46 and 167,421.60 is: 231,040.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,386.40 : 418,670.46 = 167,421.60 : x
  2. Step 2: Convert to fraction form
    303,386.40/418,670.46 = 167,421.60/x
  3. Step 3: Cross multiply
    303,386.40x = 418,670.46 × 167,421.60
  4. Step 4: Simplify right side
    303,386.40x = 70,094,478,285.94
  5. Step 5: Solve for x
    x = 70,094,478,285.94/303,386.40
  6. Step 6: Final answer
    x = 231,040.28

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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.