Home / 389,432.46-537,423.72-228,403.64

Finding the Fourth Proportional to 389,432.46, 537,423.72 and 228,403.64

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Solution

The fourth proportional to 389,432.46, 537,423.72 and 228,403.64 is: 315,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,432.46 : 537,423.72 = 228,403.64 : x
  2. Step 2: Convert to fraction form
    389,432.46/537,423.72 = 228,403.64/x
  3. Step 3: Cross multiply
    389,432.46x = 537,423.72 × 228,403.64
  4. Step 4: Simplify right side
    389,432.46x = 122,749,533,870.34
  5. Step 5: Solve for x
    x = 122,749,533,870.34/389,432.46
  6. Step 6: Final answer
    x = 315,201.08

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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.