Home / 395,139,257.70-545,291,749.65-216,527,501.25

Finding the Fourth Proportional to 395,139,257.70, 545,291,749.65 and 216,527,501.25

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Solution

The fourth proportional to 395,139,257.70, 545,291,749.65 and 216,527,501.25 is: 298,807,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,139,257.70 : 545,291,749.65 = 216,527,501.25 : x
  2. Step 2: Convert to fraction form
    395,139,257.70/545,291,749.65 = 216,527,501.25/x
  3. Step 3: Cross multiply
    395,139,257.70x = 545,291,749.65 × 216,527,501.25
  4. Step 4: Simplify right side
    395,139,257.70x = 118,070,660,003,955,056
  5. Step 5: Solve for x
    x = 118,070,660,003,955,056/395,139,257.70
  6. Step 6: Final answer
    x = 298,807,718.30

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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.