Home / 278,461.16-384,276.78-151,136.76

Finding the Fourth Proportional to 278,461.16, 384,276.78 and 151,136.76

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Solution

The fourth proportional to 278,461.16, 384,276.78 and 151,136.76 is: 208,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,461.16 : 384,276.78 = 151,136.76 : x
  2. Step 2: Convert to fraction form
    278,461.16/384,276.78 = 151,136.76/x
  3. Step 3: Cross multiply
    278,461.16x = 384,276.78 × 151,136.76
  4. Step 4: Simplify right side
    278,461.16x = 58,078,347,472.43
  5. Step 5: Solve for x
    x = 58,078,347,472.43/278,461.16
  6. Step 6: Final answer
    x = 208,568.93

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Half scale
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Double scale
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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.