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Finding the Fourth Proportional to 282,626.54, 390,027.70 and 155,302.12

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Solution

The fourth proportional to 282,626.54, 390,027.70 and 155,302.12 is: 214,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,626.54 : 390,027.70 = 155,302.12 : x
  2. Step 2: Convert to fraction form
    282,626.54/390,027.70 = 155,302.12/x
  3. Step 3: Cross multiply
    282,626.54x = 390,027.70 × 155,302.12
  4. Step 4: Simplify right side
    282,626.54x = 60,572,128,668.72
  5. Step 5: Solve for x
    x = 60,572,128,668.72/282,626.54
  6. Step 6: Final answer
    x = 214,318.62

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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.