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Finding the Fourth Proportional to 315,910.10, 473,890.08 and 105,548.78

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Solution

The fourth proportional to 315,910.10, 473,890.08 and 105,548.78 is: 158,331.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,910.10 : 473,890.08 = 105,548.78 : x
  2. Step 2: Convert to fraction form
    315,910.10/473,890.08 = 105,548.78/x
  3. Step 3: Cross multiply
    315,910.10x = 473,890.08 × 105,548.78
  4. Step 4: Simplify right side
    315,910.10x = 50,018,519,798.10
  5. Step 5: Solve for x
    x = 50,018,519,798.10/315,910.10
  6. Step 6: Final answer
    x = 158,331.50

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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.