Home / 318,637.78-439,720.10-173,444.14

Finding the Fourth Proportional to 318,637.78, 439,720.10 and 173,444.14

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Solution

The fourth proportional to 318,637.78, 439,720.10 and 173,444.14 is: 239,352.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,637.78 : 439,720.10 = 173,444.14 : x
  2. Step 2: Convert to fraction form
    318,637.78/439,720.10 = 173,444.14/x
  3. Step 3: Cross multiply
    318,637.78x = 439,720.10 × 173,444.14
  4. Step 4: Simplify right side
    318,637.78x = 76,266,874,585.21
  5. Step 5: Solve for x
    x = 76,266,874,585.21/318,637.78
  6. Step 6: Final answer
    x = 239,352.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.