Home / 420,270,447.80-630,405,671.70-133,056,111.80

Finding the Fourth Proportional to 420,270,447.80, 630,405,671.70 and 133,056,111.80

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Solution

The fourth proportional to 420,270,447.80, 630,405,671.70 and 133,056,111.80 is: 199,584,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,270,447.80 : 630,405,671.70 = 133,056,111.80 : x
  2. Step 2: Convert to fraction form
    420,270,447.80/630,405,671.70 = 133,056,111.80/x
  3. Step 3: Cross multiply
    420,270,447.80x = 630,405,671.70 × 133,056,111.80
  4. Step 4: Simplify right side
    420,270,447.80x = 83,879,327,533,069,296
  5. Step 5: Solve for x
    x = 83,879,327,533,069,296/420,270,447.80
  6. Step 6: Final answer
    x = 199,584,167.70

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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.