Home / 209,958,785.40-314,938,178.10-191,818,932.60

Finding the Fourth Proportional to 209,958,785.40, 314,938,178.10 and 191,818,932.60

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Solution

The fourth proportional to 209,958,785.40, 314,938,178.10 and 191,818,932.60 is: 287,728,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,958,785.40 : 314,938,178.10 = 191,818,932.60 : x
  2. Step 2: Convert to fraction form
    209,958,785.40/314,938,178.10 = 191,818,932.60/x
  3. Step 3: Cross multiply
    209,958,785.40x = 314,938,178.10 × 191,818,932.60
  4. Step 4: Simplify right side
    209,958,785.40x = 60,411,105,158,130,696
  5. Step 5: Solve for x
    x = 60,411,105,158,130,696/209,958,785.40
  6. Step 6: Final answer
    x = 287,728,398.90

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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.