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Finding the Fourth Proportional to 316,064.70, 473,999.85 and 91,446.30

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Solution

The fourth proportional to 316,064.70, 473,999.85 and 91,446.30 is: 137,141.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,064.70 : 473,999.85 = 91,446.30 : x
  2. Step 2: Convert to fraction form
    316,064.70/473,999.85 = 91,446.30/x
  3. Step 3: Cross multiply
    316,064.70x = 473,999.85 × 91,446.30
  4. Step 4: Simplify right side
    316,064.70x = 43,345,532,483.06
  5. Step 5: Solve for x
    x = 43,345,532,483.06/316,064.70
  6. Step 6: Final answer
    x = 137,141.33

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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.