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Finding the Fourth Proportional to 315,925.53, 473,912.78 and 105,564.21

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Solution

The fourth proportional to 315,925.53, 473,912.78 and 105,564.21 is: 158,354.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,925.53 : 473,912.78 = 105,564.21 : x
  2. Step 2: Convert to fraction form
    315,925.53/473,912.78 = 105,564.21/x
  3. Step 3: Cross multiply
    315,925.53x = 473,912.78 × 105,564.21
  4. Step 4: Simplify right side
    315,925.53x = 50,028,227,701.78
  5. Step 5: Solve for x
    x = 50,028,227,701.78/315,925.53
  6. Step 6: Final answer
    x = 158,354.49

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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.