Home / 384,960.80-531,236.16-215,210.72

Finding the Fourth Proportional to 384,960.80, 531,236.16 and 215,210.72

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Solution

The fourth proportional to 384,960.80, 531,236.16 and 215,210.72 is: 296,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,960.80 : 531,236.16 = 215,210.72 : x
  2. Step 2: Convert to fraction form
    384,960.80/531,236.16 = 215,210.72/x
  3. Step 3: Cross multiply
    384,960.80x = 531,236.16 × 215,210.72
  4. Step 4: Simplify right side
    384,960.80x = 114,327,716,483.64
  5. Step 5: Solve for x
    x = 114,327,716,483.64/384,960.80
  6. Step 6: Final answer
    x = 296,985.35

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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.