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Finding the Fourth Proportional to 342,909.46, 473,379.15 and 228,378.70

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Solution

The fourth proportional to 342,909.46, 473,379.15 and 228,378.70 is: 315,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,909.46 : 473,379.15 = 228,378.70 : x
  2. Step 2: Convert to fraction form
    342,909.46/473,379.15 = 228,378.70/x
  3. Step 3: Cross multiply
    342,909.46x = 473,379.15 × 228,378.70
  4. Step 4: Simplify right side
    342,909.46x = 108,109,714,884.11
  5. Step 5: Solve for x
    x = 108,109,714,884.11/342,909.46
  6. Step 6: Final answer
    x = 315,271.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.