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Finding the Fourth Proportional to 285,386.01, 428,128.22 and 127,626.76

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Solution

The fourth proportional to 285,386.01, 428,128.22 and 127,626.76 is: 191,462.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,386.01 : 428,128.22 = 127,626.76 : x
  2. Step 2: Convert to fraction form
    285,386.01/428,128.22 = 127,626.76/x
  3. Step 3: Cross multiply
    285,386.01x = 428,128.22 × 127,626.76
  4. Step 4: Simplify right side
    285,386.01x = 54,640,617,583.17
  5. Step 5: Solve for x
    x = 54,640,617,583.17/285,386.01
  6. Step 6: Final answer
    x = 191,462.14

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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.