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Finding the Fourth Proportional to 282,855.78, 390,423.69 and 168,215.04

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Solution

The fourth proportional to 282,855.78, 390,423.69 and 168,215.04 is: 232,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,855.78 : 390,423.69 = 168,215.04 : x
  2. Step 2: Convert to fraction form
    282,855.78/390,423.69 = 168,215.04/x
  3. Step 3: Cross multiply
    282,855.78x = 390,423.69 × 168,215.04
  4. Step 4: Simplify right side
    282,855.78x = 65,675,136,630.30
  5. Step 5: Solve for x
    x = 65,675,136,630.30/282,855.78
  6. Step 6: Final answer
    x = 232,185.95

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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.