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Finding the Fourth Proportional to 453,009.68, 679,518.64 and 137,466.60

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Solution

The fourth proportional to 453,009.68, 679,518.64 and 137,466.60 is: 206,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,009.68 : 679,518.64 = 137,466.60 : x
  2. Step 2: Convert to fraction form
    453,009.68/679,518.64 = 137,466.60/x
  3. Step 3: Cross multiply
    453,009.68x = 679,518.64 × 137,466.60
  4. Step 4: Simplify right side
    453,009.68x = 93,411,117,077.42
  5. Step 5: Solve for x
    x = 93,411,117,077.42/453,009.68
  6. Step 6: Final answer
    x = 206,201.15

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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.