Home / 279,038,679.90-385,070,322.28-153,588,193.66

Finding the Fourth Proportional to 279,038,679.90, 385,070,322.28 and 153,588,193.66

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Solution

The fourth proportional to 279,038,679.90, 385,070,322.28 and 153,588,193.66 is: 211,950,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,038,679.90 : 385,070,322.28 = 153,588,193.66 : x
  2. Step 2: Convert to fraction form
    279,038,679.90/385,070,322.28 = 153,588,193.66/x
  3. Step 3: Cross multiply
    279,038,679.90x = 385,070,322.28 × 153,588,193.66
  4. Step 4: Simplify right side
    279,038,679.90x = 59,142,255,233,179,408
  5. Step 5: Solve for x
    x = 59,142,255,233,179,408/279,038,679.90
  6. Step 6: Final answer
    x = 211,950,025.19

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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.