Home / 487,961.16-731,970.45-188,443.30

Finding the Fourth Proportional to 487,961.16, 731,970.45 and 188,443.30

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Solution

The fourth proportional to 487,961.16, 731,970.45 and 188,443.30 is: 282,676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,961.16 : 731,970.45 = 188,443.30 : x
  2. Step 2: Convert to fraction form
    487,961.16/731,970.45 = 188,443.30/x
  3. Step 3: Cross multiply
    487,961.16x = 731,970.45 × 188,443.30
  4. Step 4: Simplify right side
    487,961.16x = 137,934,927,100.49
  5. Step 5: Solve for x
    x = 137,934,927,100.49/487,961.16
  6. Step 6: Final answer
    x = 282,676.04

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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.