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Finding the Fourth Proportional to 384,715.94, 530,935.48 and 212,630.20

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Solution

The fourth proportional to 384,715.94, 530,935.48 and 212,630.20 is: 293,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,715.94 : 530,935.48 = 212,630.20 : x
  2. Step 2: Convert to fraction form
    384,715.94/530,935.48 = 212,630.20/x
  3. Step 3: Cross multiply
    384,715.94x = 530,935.48 × 212,630.20
  4. Step 4: Simplify right side
    384,715.94x = 112,892,918,178.82
  5. Step 5: Solve for x
    x = 112,892,918,178.82/384,715.94
  6. Step 6: Final answer
    x = 293,444.87

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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.