Home / 438,315.10-657,019.05-238,212.70

Finding the Fourth Proportional to 438,315.10, 657,019.05 and 238,212.70

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Solution

The fourth proportional to 438,315.10, 657,019.05 and 238,212.70 is: 357,072.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,315.10 : 657,019.05 = 238,212.70 : x
  2. Step 2: Convert to fraction form
    438,315.10/657,019.05 = 238,212.70/x
  3. Step 3: Cross multiply
    438,315.10x = 657,019.05 × 238,212.70
  4. Step 4: Simplify right side
    438,315.10x = 156,510,281,851.94
  5. Step 5: Solve for x
    x = 156,510,281,851.94/438,315.10
  6. Step 6: Final answer
    x = 357,072.53

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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.