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Finding the Fourth Proportional to 315,622.56, 473,438.16 and 105,260.64

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Solution

The fourth proportional to 315,622.56, 473,438.16 and 105,260.64 is: 157,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622.56 : 473,438.16 = 105,260.64 : x
  2. Step 2: Convert to fraction form
    315,622.56/473,438.16 = 105,260.64/x
  3. Step 3: Cross multiply
    315,622.56x = 473,438.16 × 105,260.64
  4. Step 4: Simplify right side
    315,622.56x = 49,834,403,722.02
  5. Step 5: Solve for x
    x = 49,834,403,722.02/315,622.56
  6. Step 6: Final answer
    x = 157,892.40

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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.