Home / 421,582.11-632,381.40-155,205.51

Finding the Fourth Proportional to 421,582.11, 632,381.40 and 155,205.51

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Solution

The fourth proportional to 421,582.11, 632,381.40 and 155,205.51 is: 232,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,582.11 : 632,381.40 = 155,205.51 : x
  2. Step 2: Convert to fraction form
    421,582.11/632,381.40 = 155,205.51/x
  3. Step 3: Cross multiply
    421,582.11x = 632,381.40 × 155,205.51
  4. Step 4: Simplify right side
    421,582.11x = 98,149,077,701.51
  5. Step 5: Solve for x
    x = 98,149,077,701.51/421,582.11
  6. Step 6: Final answer
    x = 232,811.30

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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.