Home / 210,430.10-290,498.30-129,902.03

Finding the Fourth Proportional to 210,430.10, 290,498.30 and 129,902.03

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Solution

The fourth proportional to 210,430.10, 290,498.30 and 129,902.03 is: 179,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,430.10 : 290,498.30 = 129,902.03 : x
  2. Step 2: Convert to fraction form
    210,430.10/290,498.30 = 129,902.03/x
  3. Step 3: Cross multiply
    210,430.10x = 290,498.30 × 129,902.03
  4. Step 4: Simplify right side
    210,430.10x = 37,736,318,356.05
  5. Step 5: Solve for x
    x = 37,736,318,356.05/210,430.10
  6. Step 6: Final answer
    x = 179,329.47

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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.