Home / 210,421.50-290,343.12-119,772.18

Finding the Fourth Proportional to 210,421.50, 290,343.12 and 119,772.18

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Solution

The fourth proportional to 210,421.50, 290,343.12 and 119,772.18 is: 165,263.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,421.50 : 290,343.12 = 119,772.18 : x
  2. Step 2: Convert to fraction form
    210,421.50/290,343.12 = 119,772.18/x
  3. Step 3: Cross multiply
    210,421.50x = 290,343.12 × 119,772.18
  4. Step 4: Simplify right side
    210,421.50x = 34,775,028,430.40
  5. Step 5: Solve for x
    x = 34,775,028,430.40/210,421.50
  6. Step 6: Final answer
    x = 165,263.67

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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.