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Finding the Fourth Proportional to 384,715.74, 530,935.20 and 212,630.01

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Solution

The fourth proportional to 384,715.74, 530,935.20 and 212,630.01 is: 293,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,715.74 : 530,935.20 = 212,630.01 : x
  2. Step 2: Convert to fraction form
    384,715.74/530,935.20 = 212,630.01/x
  3. Step 3: Cross multiply
    384,715.74x = 530,935.20 × 212,630.01
  4. Step 4: Simplify right side
    384,715.74x = 112,892,756,885.35
  5. Step 5: Solve for x
    x = 112,892,756,885.35/384,715.74
  6. Step 6: Final answer
    x = 293,444.60

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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.