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Finding the Fourth Proportional to 145,649.31, 218,485.76 and 40,468.29

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Solution

The fourth proportional to 145,649.31, 218,485.76 and 40,468.29 is: 60,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,649.31 : 218,485.76 = 40,468.29 : x
  2. Step 2: Convert to fraction form
    145,649.31/218,485.76 = 40,468.29/x
  3. Step 3: Cross multiply
    145,649.31x = 218,485.76 × 40,468.29
  4. Step 4: Simplify right side
    145,649.31x = 8,841,744,894.21
  5. Step 5: Solve for x
    x = 8,841,744,894.21/145,649.31
  6. Step 6: Final answer
    x = 60,705.71

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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.