Home / 387,923,165.56-535,346,459.58-220,655,139.40

Finding the Fourth Proportional to 387,923,165.56, 535,346,459.58 and 220,655,139.40

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Solution

The fourth proportional to 387,923,165.56, 535,346,459.58 and 220,655,139.40 is: 304,511,197.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,923,165.56 : 535,346,459.58 = 220,655,139.40 : x
  2. Step 2: Convert to fraction form
    387,923,165.56/535,346,459.58 = 220,655,139.40/x
  3. Step 3: Cross multiply
    387,923,165.56x = 535,346,459.58 × 220,655,139.40
  4. Step 4: Simplify right side
    387,923,165.56x = 118,126,947,665,921,360
  5. Step 5: Solve for x
    x = 118,126,947,665,921,360/387,923,165.56
  6. Step 6: Final answer
    x = 304,511,197.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.