Home / 423,206.45-634,475.66-209,827.25

Finding the Fourth Proportional to 423,206.45, 634,475.66 and 209,827.25

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Solution

The fourth proportional to 423,206.45, 634,475.66 and 209,827.25 is: 314,575.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,206.45 : 634,475.66 = 209,827.25 : x
  2. Step 2: Convert to fraction form
    423,206.45/634,475.66 = 209,827.25/x
  3. Step 3: Cross multiply
    423,206.45x = 634,475.66 × 209,827.25
  4. Step 4: Simplify right side
    423,206.45x = 133,130,278,708.22
  5. Step 5: Solve for x
    x = 133,130,278,708.22/423,206.45
  6. Step 6: Final answer
    x = 314,575.26

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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.