Home / 427,801.22-642,332.65-238,631.19

Finding the Fourth Proportional to 427,801.22, 642,332.65 and 238,631.19

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Solution

The fourth proportional to 427,801.22, 642,332.65 and 238,631.19 is: 358,298.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,801.22 : 642,332.65 = 238,631.19 : x
  2. Step 2: Convert to fraction form
    427,801.22/642,332.65 = 238,631.19/x
  3. Step 3: Cross multiply
    427,801.22x = 642,332.65 × 238,631.19
  4. Step 4: Simplify right side
    427,801.22x = 153,280,604,645.35
  5. Step 5: Solve for x
    x = 153,280,604,645.35/427,801.22
  6. Step 6: Final answer
    x = 358,298.66

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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.