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Finding the Fourth Proportional to 415,420.17, 623,235.29 and 115,900.61

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Solution

The fourth proportional to 415,420.17, 623,235.29 and 115,900.61 is: 173,880.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,420.17 : 623,235.29 = 115,900.61 : x
  2. Step 2: Convert to fraction form
    415,420.17/623,235.29 = 115,900.61/x
  3. Step 3: Cross multiply
    415,420.17x = 623,235.29 × 115,900.61
  4. Step 4: Simplify right side
    415,420.17x = 72,233,350,284.53
  5. Step 5: Solve for x
    x = 72,233,350,284.53/415,420.17
  6. Step 6: Final answer
    x = 173,880.22

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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.