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Finding the Fourth Proportional to 478,823.60, 660,772.11 and 261,032.29

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Solution

The fourth proportional to 478,823.60, 660,772.11 and 261,032.29 is: 360,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,823.60 : 660,772.11 = 261,032.29 : x
  2. Step 2: Convert to fraction form
    478,823.60/660,772.11 = 261,032.29/x
  3. Step 3: Cross multiply
    478,823.60x = 660,772.11 × 261,032.29
  4. Step 4: Simplify right side
    478,823.60x = 172,482,856,368.37
  5. Step 5: Solve for x
    x = 172,482,856,368.37/478,823.60
  6. Step 6: Final answer
    x = 360,222.13

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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.