Home / 421,664.76-632,581.65-155,426.40

Finding the Fourth Proportional to 421,664.76, 632,581.65 and 155,426.40

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Solution

The fourth proportional to 421,664.76, 632,581.65 and 155,426.40 is: 233,170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,664.76 : 632,581.65 = 155,426.40 : x
  2. Step 2: Convert to fraction form
    421,664.76/632,581.65 = 155,426.40/x
  3. Step 3: Cross multiply
    421,664.76x = 632,581.65 × 155,426.40
  4. Step 4: Simplify right side
    421,664.76x = 98,319,888,565.56
  5. Step 5: Solve for x
    x = 98,319,888,565.56/421,664.76
  6. Step 6: Final answer
    x = 233,170.75

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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.