Home / 438,157.10-657,316.84-138,713.06

Finding the Fourth Proportional to 438,157.10, 657,316.84 and 138,713.06

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Solution

The fourth proportional to 438,157.10, 657,316.84 and 138,713.06 is: 208,095.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,157.10 : 657,316.84 = 138,713.06 : x
  2. Step 2: Convert to fraction form
    438,157.10/657,316.84 = 138,713.06/x
  3. Step 3: Cross multiply
    438,157.10x = 657,316.84 × 138,713.06
  4. Step 4: Simplify right side
    438,157.10x = 91,178,430,265.93
  5. Step 5: Solve for x
    x = 91,178,430,265.93/438,157.10
  6. Step 6: Final answer
    x = 208,095.29

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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.