Home / 217,223,430.40-325,835,145.60-129,925,388.80

Finding the Fourth Proportional to 217,223,430.40, 325,835,145.60 and 129,925,388.80

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Solution

The fourth proportional to 217,223,430.40, 325,835,145.60 and 129,925,388.80 is: 194,888,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,223,430.40 : 325,835,145.60 = 129,925,388.80 : x
  2. Step 2: Convert to fraction form
    217,223,430.40/325,835,145.60 = 129,925,388.80/x
  3. Step 3: Cross multiply
    217,223,430.40x = 325,835,145.60 × 129,925,388.80
  4. Step 4: Simplify right side
    217,223,430.40x = 42,334,257,976,784,608
  5. Step 5: Solve for x
    x = 42,334,257,976,784,608/217,223,430.40
  6. Step 6: Final answer
    x = 194,888,083.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.