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Finding the Fourth Proportional to 318,094.56, 438,973.65 and 172,901.00

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Solution

The fourth proportional to 318,094.56, 438,973.65 and 172,901.00 is: 238,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,094.56 : 438,973.65 = 172,901.00 : x
  2. Step 2: Convert to fraction form
    318,094.56/438,973.65 = 172,901.00/x
  3. Step 3: Cross multiply
    318,094.56x = 438,973.65 × 172,901.00
  4. Step 4: Simplify right side
    318,094.56x = 75,898,984,156.08
  5. Step 5: Solve for x
    x = 75,898,984,156.08/318,094.56
  6. Step 6: Final answer
    x = 238,605.10

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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.