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Finding the Fourth Proportional to 518,293.20, 715,000.14 and 303,300.21

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Solution

The fourth proportional to 518,293.20, 715,000.14 and 303,300.21 is: 418,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,293.20 : 715,000.14 = 303,300.21 : x
  2. Step 2: Convert to fraction form
    518,293.20/715,000.14 = 303,300.21/x
  3. Step 3: Cross multiply
    518,293.20x = 715,000.14 × 303,300.21
  4. Step 4: Simplify right side
    518,293.20x = 216,859,692,612.03
  5. Step 5: Solve for x
    x = 216,859,692,612.03/518,293.20
  6. Step 6: Final answer
    x = 418,411.22

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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.