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Finding the Fourth Proportional to 446,656,758.80, 670,006,133.40 and 139,958,877.20

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Solution

The fourth proportional to 446,656,758.80, 670,006,133.40 and 139,958,877.20 is: 209,944,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,656,758.80 : 670,006,133.40 = 139,958,877.20 : x
  2. Step 2: Convert to fraction form
    446,656,758.80/670,006,133.40 = 139,958,877.20/x
  3. Step 3: Cross multiply
    446,656,758.80x = 670,006,133.40 × 139,958,877.20
  4. Step 4: Simplify right side
    446,656,758.80x = 93,773,306,147,777,408
  5. Step 5: Solve for x
    x = 93,773,306,147,777,408/446,656,758.80
  6. Step 6: Final answer
    x = 209,944,894.60

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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.