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Finding the Fourth Proportional to 478,530.16, 660,371.52 and 263,669.60

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Solution

The fourth proportional to 478,530.16, 660,371.52 and 263,669.60 is: 363,863.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,530.16 : 660,371.52 = 263,669.60 : x
  2. Step 2: Convert to fraction form
    478,530.16/660,371.52 = 263,669.60/x
  3. Step 3: Cross multiply
    478,530.16x = 660,371.52 × 263,669.60
  4. Step 4: Simplify right side
    478,530.16x = 174,119,894,529.79
  5. Step 5: Solve for x
    x = 174,119,894,529.79/478,530.16
  6. Step 6: Final answer
    x = 363,863.99

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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.