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Finding the Fourth Proportional to 308,068.32, 425,162.88 and 187,181.76

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Solution

The fourth proportional to 308,068.32, 425,162.88 and 187,181.76 is: 258,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,068.32 : 425,162.88 = 187,181.76 : x
  2. Step 2: Convert to fraction form
    308,068.32/425,162.88 = 187,181.76/x
  3. Step 3: Cross multiply
    308,068.32x = 425,162.88 × 187,181.76
  4. Step 4: Simplify right side
    308,068.32x = 79,582,736,165.07
  5. Step 5: Solve for x
    x = 79,582,736,165.07/308,068.32
  6. Step 6: Final answer
    x = 258,328.21

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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.