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Finding the Fourth Proportional to 308,798.61, 426,141.45 and 172,832.01

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Solution

The fourth proportional to 308,798.61, 426,141.45 and 172,832.01 is: 238,507.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,798.61 : 426,141.45 = 172,832.01 : x
  2. Step 2: Convert to fraction form
    308,798.61/426,141.45 = 172,832.01/x
  3. Step 3: Cross multiply
    308,798.61x = 426,141.45 × 172,832.01
  4. Step 4: Simplify right side
    308,798.61x = 73,650,883,347.81
  5. Step 5: Solve for x
    x = 73,650,883,347.81/308,798.61
  6. Step 6: Final answer
    x = 238,507.82

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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.