Home / 279,038,669.72-385,070,308.44-153,588,183.50

Finding the Fourth Proportional to 279,038,669.72, 385,070,308.44 and 153,588,183.50

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Solution

The fourth proportional to 279,038,669.72, 385,070,308.44 and 153,588,183.50 is: 211,950,011.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,038,669.72 : 385,070,308.44 = 153,588,183.50 : x
  2. Step 2: Convert to fraction form
    279,038,669.72/385,070,308.44 = 153,588,183.50/x
  3. Step 3: Cross multiply
    279,038,669.72x = 385,070,308.44 × 153,588,183.50
  4. Step 4: Simplify right side
    279,038,669.72x = 59,142,249,193,084,320
  5. Step 5: Solve for x
    x = 59,142,249,193,084,320/279,038,669.72
  6. Step 6: Final answer
    x = 211,950,011.27

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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.