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Finding the Fourth Proportional to 217,417.70, 325,964.55 and 112,312.10

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Solution

The fourth proportional to 217,417.70, 325,964.55 and 112,312.10 is: 168,384.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,417.70 : 325,964.55 = 112,312.10 : x
  2. Step 2: Convert to fraction form
    217,417.70/325,964.55 = 112,312.10/x
  3. Step 3: Cross multiply
    217,417.70x = 325,964.55 × 112,312.10
  4. Step 4: Simplify right side
    217,417.70x = 36,609,763,136.06
  5. Step 5: Solve for x
    x = 36,609,763,136.06/217,417.70
  6. Step 6: Final answer
    x = 168,384.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.