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Finding the Fourth Proportional to 342,210.40, 514,190.40 and 303,719.20

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Solution

The fourth proportional to 342,210.40, 514,190.40 and 303,719.20 is: 456,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,210.40 : 514,190.40 = 303,719.20 : x
  2. Step 2: Convert to fraction form
    342,210.40/514,190.40 = 303,719.20/x
  3. Step 3: Cross multiply
    342,210.40x = 514,190.40 × 303,719.20
  4. Step 4: Simplify right side
    342,210.40x = 156,169,496,935.68
  5. Step 5: Solve for x
    x = 156,169,496,935.68/342,210.40
  6. Step 6: Final answer
    x = 456,355.20

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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.