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Finding the Fourth Proportional to 316,313.40, 473,778.90 and 245,638.20

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Solution

The fourth proportional to 316,313.40, 473,778.90 and 245,638.20 is: 367,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,313.40 : 473,778.90 = 245,638.20 : x
  2. Step 2: Convert to fraction form
    316,313.40/473,778.90 = 245,638.20/x
  3. Step 3: Cross multiply
    316,313.40x = 473,778.90 × 245,638.20
  4. Step 4: Simplify right side
    316,313.40x = 116,378,196,193.98
  5. Step 5: Solve for x
    x = 116,378,196,193.98/316,313.40
  6. Step 6: Final answer
    x = 367,920.54

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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.