Home / 285,247.88-393,642.07-157,931.67

Finding the Fourth Proportional to 285,247.88, 393,642.07 and 157,931.67

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Solution

The fourth proportional to 285,247.88, 393,642.07 and 157,931.67 is: 217,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,247.88 : 393,642.07 = 157,931.67 : x
  2. Step 2: Convert to fraction form
    285,247.88/393,642.07 = 157,931.67/x
  3. Step 3: Cross multiply
    285,247.88x = 393,642.07 × 157,931.67
  4. Step 4: Simplify right side
    285,247.88x = 62,168,549,497.36
  5. Step 5: Solve for x
    x = 62,168,549,497.36/285,247.88
  6. Step 6: Final answer
    x = 217,945.70

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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.