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Finding the Fourth Proportional to 384,790.49, 531,003.04 and 212,715.71

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Solution

The fourth proportional to 384,790.49, 531,003.04 and 212,715.71 is: 293,543.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,790.49 : 531,003.04 = 212,715.71 : x
  2. Step 2: Convert to fraction form
    384,790.49/531,003.04 = 212,715.71/x
  3. Step 3: Cross multiply
    384,790.49x = 531,003.04 × 212,715.71
  4. Step 4: Simplify right side
    384,790.49x = 112,952,688,665.76
  5. Step 5: Solve for x
    x = 112,952,688,665.76/384,790.49
  6. Step 6: Final answer
    x = 293,543.35

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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.