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Finding the Fourth Proportional to 551,886.13, 761,665.78 and 306,895.15

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Solution

The fourth proportional to 551,886.13, 761,665.78 and 306,895.15 is: 423,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,886.13 : 761,665.78 = 306,895.15 : x
  2. Step 2: Convert to fraction form
    551,886.13/761,665.78 = 306,895.15/x
  3. Step 3: Cross multiply
    551,886.13x = 761,665.78 × 306,895.15
  4. Step 4: Simplify right side
    551,886.13x = 233,751,533,802.97
  5. Step 5: Solve for x
    x = 233,751,533,802.97/551,886.13
  6. Step 6: Final answer
    x = 423,550.30

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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.