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Finding the Fourth Proportional to 319,061.60, 479,139.60 and 176,847.20

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Solution

The fourth proportional to 319,061.60, 479,139.60 and 176,847.20 is: 265,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,061.60 : 479,139.60 = 176,847.20 : x
  2. Step 2: Convert to fraction form
    319,061.60/479,139.60 = 176,847.20/x
  3. Step 3: Cross multiply
    319,061.60x = 479,139.60 × 176,847.20
  4. Step 4: Simplify right side
    319,061.60x = 84,734,496,669.12
  5. Step 5: Solve for x
    x = 84,734,496,669.12/319,061.60
  6. Step 6: Final answer
    x = 265,574.10

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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.