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Finding the Fourth Proportional to 439,758.40, 659,637.60 and 173,430.40

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Solution

The fourth proportional to 439,758.40, 659,637.60 and 173,430.40 is: 260,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,758.40 : 659,637.60 = 173,430.40 : x
  2. Step 2: Convert to fraction form
    439,758.40/659,637.60 = 173,430.40/x
  3. Step 3: Cross multiply
    439,758.40x = 659,637.60 × 173,430.40
  4. Step 4: Simplify right side
    439,758.40x = 114,401,212,823.04
  5. Step 5: Solve for x
    x = 114,401,212,823.04/439,758.40
  6. Step 6: Final answer
    x = 260,145.60

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1.5x scale

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.