Home / 438,411.23-657,636.01-138,913.89

Finding the Fourth Proportional to 438,411.23, 657,636.01 and 138,913.89

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Solution

The fourth proportional to 438,411.23, 657,636.01 and 138,913.89 is: 208,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,411.23 : 657,636.01 = 138,913.89 : x
  2. Step 2: Convert to fraction form
    438,411.23/657,636.01 = 138,913.89/x
  3. Step 3: Cross multiply
    438,411.23x = 657,636.01 × 138,913.89
  4. Step 4: Simplify right side
    438,411.23x = 91,354,774,321.15
  5. Step 5: Solve for x
    x = 91,354,774,321.15/438,411.23
  6. Step 6: Final answer
    x = 208,376.90

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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.