Home / 279,038,689.90-385,070,336.21-153,588,203.66

Finding the Fourth Proportional to 279,038,689.90, 385,070,336.21 and 153,588,203.66

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Solution

The fourth proportional to 279,038,689.90, 385,070,336.21 and 153,588,203.66 is: 211,950,039.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,038,689.90 : 385,070,336.21 = 153,588,203.66 : x
  2. Step 2: Convert to fraction form
    279,038,689.90/385,070,336.21 = 153,588,203.66/x
  3. Step 3: Cross multiply
    279,038,689.90x = 385,070,336.21 × 153,588,203.66
  4. Step 4: Simplify right side
    279,038,689.90x = 59,142,261,222,592,792
  5. Step 5: Solve for x
    x = 59,142,261,222,592,792/279,038,689.90
  6. Step 6: Final answer
    x = 211,950,039.06

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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.