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Finding the Fourth Proportional to 282,649.40, 423,974.10 and 274,457.40

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Solution

The fourth proportional to 282,649.40, 423,974.10 and 274,457.40 is: 411,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,649.40 : 423,974.10 = 274,457.40 : x
  2. Step 2: Convert to fraction form
    282,649.40/423,974.10 = 274,457.40/x
  3. Step 3: Cross multiply
    282,649.40x = 423,974.10 × 274,457.40
  4. Step 4: Simplify right side
    282,649.40x = 116,362,829,153.34
  5. Step 5: Solve for x
    x = 116,362,829,153.34/282,649.40
  6. Step 6: Final answer
    x = 411,686.10

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Double scale
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Similar ratio
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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.