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Finding the Fourth Proportional to 371,055.68, 556,664.16 and 121,728.32

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Solution

The fourth proportional to 371,055.68, 556,664.16 and 121,728.32 is: 182,618.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,055.68 : 556,664.16 = 121,728.32 : x
  2. Step 2: Convert to fraction form
    371,055.68/556,664.16 = 121,728.32/x
  3. Step 3: Cross multiply
    371,055.68x = 556,664.16 × 121,728.32
  4. Step 4: Simplify right side
    371,055.68x = 67,761,793,001.01
  5. Step 5: Solve for x
    x = 67,761,793,001.01/371,055.68
  6. Step 6: Final answer
    x = 182,618.93

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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.