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Finding the Fourth Proportional to 478,308.32, 660,065.46 and 263,448.38

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Solution

The fourth proportional to 478,308.32, 660,065.46 and 263,448.38 is: 363,558.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,308.32 : 660,065.46 = 263,448.38 : x
  2. Step 2: Convert to fraction form
    478,308.32/660,065.46 = 263,448.38/x
  3. Step 3: Cross multiply
    478,308.32x = 660,065.46 × 263,448.38
  4. Step 4: Simplify right side
    478,308.32x = 173,893,176,793.19
  5. Step 5: Solve for x
    x = 173,893,176,793.19/478,308.32
  6. Step 6: Final answer
    x = 363,558.75

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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.