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Finding the Fourth Proportional to 480,332.32, 720,508.40 and 147,908

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Solution

The fourth proportional to 480,332.32, 720,508.40 and 147,908 is: 221,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,332.32 : 720,508.40 = 147,908 : x
  2. Step 2: Convert to fraction form
    480,332.32/720,508.40 = 147,908/x
  3. Step 3: Cross multiply
    480,332.32x = 720,508.40 × 147,908
  4. Step 4: Simplify right side
    480,332.32x = 106,568,956,427.20
  5. Step 5: Solve for x
    x = 106,568,956,427.20/480,332.32
  6. Step 6: Final answer
    x = 221,865.05

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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.