Home / 210,389.20-290,061.60-155,768.88

Finding the Fourth Proportional to 210,389.20, 290,061.60 and 155,768.88

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Solution

The fourth proportional to 210,389.20, 290,061.60 and 155,768.88 is: 214,757.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,389.20 : 290,061.60 = 155,768.88 : x
  2. Step 2: Convert to fraction form
    210,389.20/290,061.60 = 155,768.88/x
  3. Step 3: Cross multiply
    210,389.20x = 290,061.60 × 155,768.88
  4. Step 4: Simplify right side
    210,389.20x = 45,182,570,563.01
  5. Step 5: Solve for x
    x = 45,182,570,563.01/210,389.20
  6. Step 6: Final answer
    x = 214,757.08

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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.