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Finding the Fourth Proportional to 518,267.95, 715,234.12 and 303,477.21

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Solution

The fourth proportional to 518,267.95, 715,234.12 and 303,477.21 is: 418,812.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,267.95 : 715,234.12 = 303,477.21 : x
  2. Step 2: Convert to fraction form
    518,267.95/715,234.12 = 303,477.21/x
  3. Step 3: Cross multiply
    518,267.95x = 715,234.12 × 303,477.21
  4. Step 4: Simplify right side
    518,267.95x = 217,057,254,475.71
  5. Step 5: Solve for x
    x = 217,057,254,475.71/518,267.95
  6. Step 6: Final answer
    x = 418,812.81

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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.