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Finding the Fourth Proportional to 472,612.80, 708,271.20 and 303,614.40

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Solution

The fourth proportional to 472,612.80, 708,271.20 and 303,614.40 is: 455,005.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,612.80 : 708,271.20 = 303,614.40 : x
  2. Step 2: Convert to fraction form
    472,612.80/708,271.20 = 303,614.40/x
  3. Step 3: Cross multiply
    472,612.80x = 708,271.20 × 303,614.40
  4. Step 4: Simplify right side
    472,612.80x = 215,041,335,425.28
  5. Step 5: Solve for x
    x = 215,041,335,425.28/472,612.80
  6. Step 6: Final answer
    x = 455,005.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.