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Finding the Fourth Proportional to 319,455.72, 478,776.48 and 169,767.72

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Solution

The fourth proportional to 319,455.72, 478,776.48 and 169,767.72 is: 254,435.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,455.72 : 478,776.48 = 169,767.72 : x
  2. Step 2: Convert to fraction form
    319,455.72/478,776.48 = 169,767.72/x
  3. Step 3: Cross multiply
    319,455.72x = 478,776.48 × 169,767.72
  4. Step 4: Simplify right side
    319,455.72x = 81,280,791,399.23
  5. Step 5: Solve for x
    x = 81,280,791,399.23/319,455.72
  6. Step 6: Final answer
    x = 254,435.24

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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.