Home / 285,430.50-393,894.09-158,114.34

Finding the Fourth Proportional to 285,430.50, 393,894.09 and 158,114.34

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Solution

The fourth proportional to 285,430.50, 393,894.09 and 158,114.34 is: 218,197.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,430.50 : 393,894.09 = 158,114.34 : x
  2. Step 2: Convert to fraction form
    285,430.50/393,894.09 = 158,114.34/x
  3. Step 3: Cross multiply
    285,430.50x = 393,894.09 × 158,114.34
  4. Step 4: Simplify right side
    285,430.50x = 62,280,304,070.25
  5. Step 5: Solve for x
    x = 62,280,304,070.25/285,430.50
  6. Step 6: Final answer
    x = 218,197.79

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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.