Home / 387,947.12-581,920.60-107,464.40

Finding the Fourth Proportional to 387,947.12, 581,920.60 and 107,464.40

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Solution

The fourth proportional to 387,947.12, 581,920.60 and 107,464.40 is: 161,196.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,947.12 : 581,920.60 = 107,464.40 : x
  2. Step 2: Convert to fraction form
    387,947.12/581,920.60 = 107,464.40/x
  3. Step 3: Cross multiply
    387,947.12x = 581,920.60 × 107,464.40
  4. Step 4: Simplify right side
    387,947.12x = 62,535,748,126.64
  5. Step 5: Solve for x
    x = 62,535,748,126.64/387,947.12
  6. Step 6: Final answer
    x = 161,196.58

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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.