Home / 487,905.30-731,967.30-188,359.20

Finding the Fourth Proportional to 487,905.30, 731,967.30 and 188,359.20

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Solution

The fourth proportional to 487,905.30, 731,967.30 and 188,359.20 is: 282,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,905.30 : 731,967.30 = 188,359.20 : x
  2. Step 2: Convert to fraction form
    487,905.30/731,967.30 = 188,359.20/x
  3. Step 3: Cross multiply
    487,905.30x = 731,967.30 × 188,359.20
  4. Step 4: Simplify right side
    487,905.30x = 137,872,775,054.16
  5. Step 5: Solve for x
    x = 137,872,775,054.16/487,905.30
  6. Step 6: Final answer
    x = 282,581.02

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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.