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Finding the Fourth Proportional to 518,265.69, 715,231.01 and 303,474.95

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Solution

The fourth proportional to 518,265.69, 715,231.01 and 303,474.95 is: 418,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,265.69 : 715,231.01 = 303,474.95 : x
  2. Step 2: Convert to fraction form
    518,265.69/715,231.01 = 303,474.95/x
  3. Step 3: Cross multiply
    518,265.69x = 715,231.01 × 303,474.95
  4. Step 4: Simplify right side
    518,265.69x = 217,054,698,886.02
  5. Step 5: Solve for x
    x = 217,054,698,886.02/518,265.69
  6. Step 6: Final answer
    x = 418,809.70

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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.