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Finding the Fourth Proportional to 313,090.40, 469,250.40 and 144,376.40

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Solution

The fourth proportional to 313,090.40, 469,250.40 and 144,376.40 is: 216,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,090.40 : 469,250.40 = 144,376.40 : x
  2. Step 2: Convert to fraction form
    313,090.40/469,250.40 = 144,376.40/x
  3. Step 3: Cross multiply
    313,090.40x = 469,250.40 × 144,376.40
  4. Step 4: Simplify right side
    313,090.40x = 67,748,683,450.56
  5. Step 5: Solve for x
    x = 67,748,683,450.56/313,090.40
  6. Step 6: Final answer
    x = 216,386.97

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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.