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Finding the Fourth Proportional to 315,377.72, 473,141.90 and 105,017.48

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Solution

The fourth proportional to 315,377.72, 473,141.90 and 105,017.48 is: 157,551.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,377.72 : 473,141.90 = 105,017.48 : x
  2. Step 2: Convert to fraction form
    315,377.72/473,141.90 = 105,017.48/x
  3. Step 3: Cross multiply
    315,377.72x = 473,141.90 × 105,017.48
  4. Step 4: Simplify right side
    315,377.72x = 49,688,170,020.41
  5. Step 5: Solve for x
    x = 49,688,170,020.41/315,377.72
  6. Step 6: Final answer
    x = 157,551.30

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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.