Home / 285,308.24-393,720.55-157,981.10

Finding the Fourth Proportional to 285,308.24, 393,720.55 and 157,981.10

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Solution

The fourth proportional to 285,308.24, 393,720.55 and 157,981.10 is: 218,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,308.24 : 393,720.55 = 157,981.10 : x
  2. Step 2: Convert to fraction form
    285,308.24/393,720.55 = 157,981.10/x
  3. Step 3: Cross multiply
    285,308.24x = 393,720.55 × 157,981.10
  4. Step 4: Simplify right side
    285,308.24x = 62,200,404,694.50
  5. Step 5: Solve for x
    x = 62,200,404,694.50/285,308.24
  6. Step 6: Final answer
    x = 218,011.25

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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.