Home / 438,916,076.80-658,075,516.80-208,995,308.80

Finding the Fourth Proportional to 438,916,076.80, 658,075,516.80 and 208,995,308.80

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Solution

The fourth proportional to 438,916,076.80, 658,075,516.80 and 208,995,308.80 is: 313,350,781.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,916,076.80 : 658,075,516.80 = 208,995,308.80 : x
  2. Step 2: Convert to fraction form
    438,916,076.80/658,075,516.80 = 208,995,308.80/x
  3. Step 3: Cross multiply
    438,916,076.80x = 658,075,516.80 × 208,995,308.80
  4. Step 4: Simplify right side
    438,916,076.80x = 137,534,695,847,335,584
  5. Step 5: Solve for x
    x = 137,534,695,847,335,584/438,916,076.80
  6. Step 6: Final answer
    x = 313,350,781.89

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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.