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Finding the Fourth Proportional to 518,268.16, 714,965.70 and 303,276.34

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Solution

The fourth proportional to 518,268.16, 714,965.70 and 303,276.34 is: 418,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,268.16 : 714,965.70 = 303,276.34 : x
  2. Step 2: Convert to fraction form
    518,268.16/714,965.70 = 303,276.34/x
  3. Step 3: Cross multiply
    518,268.16x = 714,965.70 × 303,276.34
  4. Step 4: Simplify right side
    518,268.16x = 216,832,180,721.54
  5. Step 5: Solve for x
    x = 216,832,180,721.54/518,268.16
  6. Step 6: Final answer
    x = 418,378.36

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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.