Home / 387,710.08-581,564.40-121,491

Finding the Fourth Proportional to 387,710.08, 581,564.40 and 121,491

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Solution

The fourth proportional to 387,710.08, 581,564.40 and 121,491 is: 182,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,710.08 : 581,564.40 = 121,491 : x
  2. Step 2: Convert to fraction form
    387,710.08/581,564.40 = 121,491/x
  3. Step 3: Cross multiply
    387,710.08x = 581,564.40 × 121,491
  4. Step 4: Simplify right side
    387,710.08x = 70,654,840,520.40
  5. Step 5: Solve for x
    x = 70,654,840,520.40/387,710.08
  6. Step 6: Final answer
    x = 182,236.27

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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.