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Finding the Fourth Proportional to 518,318.67, 715,035.20 and 303,325.63

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Solution

The fourth proportional to 518,318.67, 715,035.20 and 303,325.63 is: 418,446.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,318.67 : 715,035.20 = 303,325.63 : x
  2. Step 2: Convert to fraction form
    518,318.67/715,035.20 = 303,325.63/x
  3. Step 3: Cross multiply
    518,318.67x = 715,035.20 × 303,325.63
  4. Step 4: Simplify right side
    518,318.67x = 216,888,502,512.18
  5. Step 5: Solve for x
    x = 216,888,502,512.18/518,318.67
  6. Step 6: Final answer
    x = 418,446.25

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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.