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Finding the Fourth Proportional to 642,818.04, 964,407.60 and 238,004.16

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Solution

The fourth proportional to 642,818.04, 964,407.60 and 238,004.16 is: 357,073.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,818.04 : 964,407.60 = 238,004.16 : x
  2. Step 2: Convert to fraction form
    642,818.04/964,407.60 = 238,004.16/x
  3. Step 3: Cross multiply
    642,818.04x = 964,407.60 × 238,004.16
  4. Step 4: Simplify right side
    642,818.04x = 229,533,020,735.62
  5. Step 5: Solve for x
    x = 229,533,020,735.62/642,818.04
  6. Step 6: Final answer
    x = 357,073.09

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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.