Home / 210,389.40-290,352.90-119,774.68

Finding the Fourth Proportional to 210,389.40, 290,352.90 and 119,774.68

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Solution

The fourth proportional to 210,389.40, 290,352.90 and 119,774.68 is: 165,297.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,389.40 : 290,352.90 = 119,774.68 : x
  2. Step 2: Convert to fraction form
    210,389.40/290,352.90 = 119,774.68/x
  3. Step 3: Cross multiply
    210,389.40x = 290,352.90 × 119,774.68
  4. Step 4: Simplify right side
    210,389.40x = 34,776,925,684.57
  5. Step 5: Solve for x
    x = 34,776,925,684.57/210,389.40
  6. Step 6: Final answer
    x = 165,297.90

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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.